High Performance 1M×4 CMOS DRAM AS4C14400 AS4C14405 ® 1M-bit × 4 CMOS DRAM (Fast page mode or EDO) Preliminary information Features • 1024 refresh cycles, 16 ms refresh interval • Organization: 1,048,576 words × 4 bits • High speed - RAS-only or CAS-before-RAS refresh • Read-modify-write • TTL-compatible, three-state I/O • JEDEC standard packages - 40/50/60/70 ns RAS access time - 20/25/30/35 ns column address access time - 10/13/15/18 ns CAS access time • Low power consumption - 300 mil, 20/26-pin SOJ - 300 mil, 20/26-pin TSOP - Active: 385 mW max (-60) - Standby: 5.5 mW max, CMOS I/O • Fast page mode (AS4C14400) or EDO (AS4C14405) • Single 5V power supply • ESD protection ≥ 2001V • Latch-up current ≥ 200 mA Pin arrangement Pin designation SOJ TSOP I/O0 I/O1 WE RAS A9 1 2 3 4 5 26 25 24 23 22 GND I/O3 I/O2 CAS OE I/O0 I/O1 WE RAS A9 1 2 3 4 5 26 25 24 23 22 GND I/O3 I/O2 CAS OE A0 A1 A2 A3 VCC 9 10 11 12 13 18 17 16 15 14 A8 A7 A6 A5 A4 A0 A1 A2 A3 VCC 9 10 11 12 13 18 17 16 15 14 A8 A7 A6 A5 A4 Pin(s) Description A0 to A9 Address inputs RAS Row address strobe I/O0 to I/O3 Input/output OE Output enable CAS Column address strobe WE Read/write control VCC Power (5.0 ± 0.5V) GND Ground Selection guide Symbol 4C14400-40 4C14400-50 4C14400-60 4C14400-70 Unit Maximum RAS access time tRAC 40 50 60 70 ns Maximum column address access time tCAA 20 25 30 35 ns Maximum CAS access time tCAC 10 13 15 18 ns Maximum output enable (OE) access time tOEA 10 13 15 18 ns Minimum read or write cycle time tRC 70 90 110 130 ns Minimum fast page mode cycle time tPC 30 35 40 45 ns Maximum operating current ICC1 90 80 70 60 mA Maximum CMOS standby current ICC5 1.0 1.0 1.0 1.0 mA Shaded areas contain advance information. ALLIANCE SEMICONDUCTOR AS4C14400 ® Functional description The AS4C14400 is a high performance CMOS Dynamic Random Access Memory organized as 1,048,576 words × 4 bits. The AS4C14400 is fabricated with advanced CMOS technology and designed with innovative design techniques resulting in high speed, extremely low power and wide operating margins at component and system levels. The AS4C14400 features a high speed page mode operation in which high speed read, write and read-write are performed on any of the 1024 × 4 bits defined by the column address. The asynchronous column address uses an extremely short row address capture time to ease the system level timing constraints associated with multiplexed addressing. Output is tri-stated by a column address strobe (CAS) which acts as an output enable independent of RAS. Very fast CAS to output access time eases system design. Refresh on the 1024 address combinations of A0 to A9 during a 16 ms period is accomplished by performing any of the following: • RAS-only refresh cycles • Hidden refresh cycles • CAS-before-RAS refresh cycles • Normal read or write cycles The AS4C14400 is available in JEDEC standard 20/26-pin plastic SOJ and 20/26-pin plastic TSOP packages. System level features include single power supply of 5.0 ± 0.5V tolerance and direct interface with TTL logic families. REFRESH CONTROLLER Logic block diagram RAS RAS clock generator CAS CAS clock generator WE WE clock generator A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 Sense amp OE Row decoder GND I/O3 I/O2 I/O1 I/O0 Data I/O Column decoder Address buffer Vcc 1024 × 1024 × 4 Array (4,194,304) Recommended operating conditions Parameter Supply voltage Input voltage Operating temperature Symbol Minimum Nominal Maximum Unit VCC 4.5 5.0 5.5 V GND 0.0 0.0 0.0 V VIH 2.4 – VCC + 1 V VIL –1.0 – 0.8 V TA 0 70 °C Recommended operating conditions apply to all specifications unless otherwise noted. 2 AS4C14400 ® Absolute maximum ratings Parameter Symbol Minimum Maximum Unit Input voltage Vin -1.0 +7.0 V Output voltage Vout -1.0 +7.0 V Power supply voltage VCC -1.0 +7.0 V Storage temperature (plastic) TSTG -55 +150 °C Soldering temperature × time TSOLDER – 260 × 10 o Power dissipation PD – 1 W DC output current Iout – 50 mA C × sec NOTE: Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions outside those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. DC electrical characteristics -40 Parameter Symbol Test Conditions Input leakage current II Output leakage current -60 -70 Max Min Max Min Max Min Max Unit Notes 0V ≤ Vin ≤ +5.5V -2 Pins not under test = 0V +2 -2 +2 -2 +2 -2 +2 µA IOZ Outputs disabled, 0V ≤ Vout ≤ +5.5V -10 +10 -10 +10 -10 +10 -10 +10 µA Operating power supply current ICC1 RAS, CAS, Address cycling: tRC=min – 90 – 80 – 70 – 60 mA TTL standby power supply current ICC2 RAS = CAS = VIH – 2.0 – 2.0 – 2.0 – 2.0 mA Average power supply I current, RAS refresh mode CC3 RAS cycling, CAS = VIH, – tRC = min 90 – 80 – 70 – 60 mA 1 Fast page mode average power supply current ICC4 RAS = VIL, CAS cycling, Address cycling: tPC = min – 80 – 70 – 60 – 50 mA 1,2 CMOS standby power supply current ICC5 RAS = CAS = VCC - 0.2V – 1.0 – 1.0 – 1.0 – 1.0 mA CAS-before-RAS refresh power supply current ICC6 RAS, CAS cycling: tRC = min – 90 – 80 – 70 – 60 mA VOH IOUT = -5.0 mA 2.4 – 2.4 – 2.4 – 2.4 – V VOL IOUT = 4.2 mA – 0.4 – 0.4 – 0.4 – 0.4 V Output voltage Min -50 1,2 1 Shaded areas contain advance information. 3 AS4C14400 ® AC parameters common to all waveforms -40 -50 -60 -70 Symbol Parameter Min Max Min Max Min Max Min Max Unit tRC Random read or write cycle time 70 – 90 – 110 – 130 – ns tRP RAS precharge time 20 – 30 – 40 – 50 – ns tRAS RAS pulse width 40 10K 50 10K 60 10K 70 10K ns tCAS CAS pulse width 10 – 13 – 15 – 18 – ns tRCD RAS to CAS delay time 18 30 20 37 20 45 20 52 ns 6 tRAD RAS to column address delay time 13 20 15 25 15 30 15 35 ns 7 tRSH(R) CAS to RAS hold time (read) 10 – 13 – 15 – 18 – ns tCSH RAS to CAS hold time 40 – 50 – 60 – 70 – ns tCRP CAS to RAS precharge time 0 – 0 – 0 – 0 – ns tASR Row address setup time 0 – 0 – 0 – 0 – ns tRAH Row address hold time 8 – 10 – 10 – 10 – ns tT Transition time (rise and fall) 2 50 2 50 2 50 2 50 ns 4,5 tREF Refresh period – 16 – 16 – 16 – 16 ms 3 tCLZ CAS to output in low Z 0 – 0 – 0 – 0 – ns 8 Notes Shaded areas contain advance information. Read cycle -40 -50 -60 -70 Min Max Min Max Min Max Min Max Unit Notes Access time from RAS – 40 – 50 – 60 – 70 ns 6 tCAC Access time from CAS – 10 – 13 – 15 – 18 ns 6,13 tAA Access time from address – 20 – 25 – 30 – 35 ns 7,13 tAR(R) Column add hold from RAS 30 – 40 – 45 – 55 – ns tRCS Read command setup time 0 – 0 – 0 – 0 – ns tRCH Read command hold time to CAS 0 – 0 – 0 – 0 – ns 9 tRRH Read command hold time to RAS 0 – 0 – 0 – 0 – ns 9 tRAL Column address to RAS lead time 20 – 25 – 30 – 35 – ns tCPN CAS precharge time 5 – 10 – 10 – 10 – ns tODS Output disable setup time 0 – 0 – 0 – 0 – ns tOFF Output buffer turn-off time 0 10 0 13 0 15 0 18 ns Symbol Parameter tRAC Shaded areas contain advance information. 4 8,10 AS4C14400 ® Write cycle -40 Symbol Parameter tASC -50 -60 -70 Min Max Min Max Min Max Min Max Unit Column address setup time 0 – 0 – 0 – 0 – ns tCAH Column address hold time 8 – 10 – 10 – 15 – ns tAWR Column address hold time to RAS 30 – 40 – 45 – 55 – ns tWCS Write command setup time 0 – 0 – 0 – 0 – ns 11 tWCH Write command hold time 5 – 10 – 10 – 15 – ns 11 tWCR Write command hold time to RAS 30 – 40 – 45 – 55 – ns tWP Write command pulse width 8 – 10 – 10 – 15 – ns tRWL Write command to RAS lead time 10 – 13 – 15 – 18 – ns tCWL Write command to CAS lead time 10 – 13 – 15 – 18 – ns tDS Data-In setup time 0 – 0 – 0 – 0 – ns 12 tDH Data-In hold time 8 – 10 – 10 – 15 – ns 12 tDHR Data-In hold time to RAS 30 – 40 – 45 – 55 – ns Notes Shaded areas contain advance information. Read-modify-write cycle -40 -50 -60 -70 Symbol Parameter Min Max Min Max Min Max Min Max Unit tRWC Read-write cycle time 105 – 131 – 155 – 181 – ns tRWD RAS to WE delay time 60 – 73 – 85 – 98 – ns 11 tCWD CAS to WE delay time 30 – 36 – 40 – 46 – ns 11 tAWD Column address to WE delay time 40 – 48 – 55 – 63 – ns 11 tRSH(W) CAS to RAS hold time (write) 10 – 13 – 15 – 18 – ns tCAS(W) CAS pulse width (write) 10 – 13 – 15 – 18 – ns Notes Shaded areas contain advance information. 5 AS4C14400 ® Fast page mode cycle -40 -50 -60 -70 Symbol Parameter Min Max Min Max Min Max Min Max Unit Notes tPC Read-write cycle time (fast page) 30 – 35 – 40 – 45 – ns 14 tCAP Access time from CAS precharge – 25 – 30 – 35 – 40 ns 13 tCP CAS precharge time (fast page) 5 – 10 – 10 – 10 – ns tPCM Fast page mode RMW cycle 65 – 76 – 85 – 96 – ns tCRW Page mode CAS pulse width (RMW) 45 – 54 – 60 – 69 – ns tRASP RAS pulse width 40 100K 50 100K 60 100K 70 100K ns Shaded areas contain advance information. Refresh cycle -40 -50 -60 -70 Symbol Parameter Min Max Min Max Min Max Min Max Unit Notes tCSR CAS setup time (CAS-before-RAS) 10 – 10 – 10 – 10 – ns 3 tCHR CAS hold time (CAS-before-RAS) 10 – 10 – 15 – 15 – ns 3 tRPC RAS precharge to CAS hold time 0 – 0 – 0 – 0 – ns tCPT CAS precharge time (CAS-before-RAS counter test) 5 – 10 – 10 – 10 – ns Shaded areas contain advance information. Output enable -40 Std Symbol Parameter tROH -50 -60 -70 Min Max Min Max Min Max Min Max Unit RAS hold time referenced to OE 5 – 10 – 10 – 10 – ns tOEA OE access time – 10 – 13 – 15 – 18 ns tOED OE to data delay 10 – 13 – 15 – 18 – ns tOEZ Output buffer turnoff delay from OE – 10 – 13 – 15 – 18 ns tOEH OE command hold time 10 – 13 – 15 – 18 – ns Shaded areas contain advance information. 6 Notes 8, 10 AS4C14400 ® Notes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ICC1, ICC3, ICC4, and ICC6 depend on cycle rate. ICC1 and ICC4 depend on output loading. Specified values are obtained with the output open. An initial pause of 200 µs is required after power-up followed by any 8 RAS cycles before proper device operation is achieved. In the case of an internal refresh counter, a minimum of 8 CAS-before-RAS initialization cycles instead of 8 RAS cycles are required. 8 initialization cycles are required after extended periods of bias without clocks (greater than 16 ms). AC Characteristics assume tT = 5 ns. All AC parameters are measured with a load equivalent to two TTL loads and 100 pF, V IL (min) ≥ GND and VIH (max) ≤ VCC. See AC test conditions for more information. VIH (min) and VIL (max) are reference levels for measuring timing of input signals. Transition times are measured between V IH and VIL . Operation within the t RCD (max) limit ensures that tRAC (max) can be met. tRCD (max) is specified as a reference point only. If tRCD is greater than the specified tRCD (max) limit, then access time is controlled exclusively by tCAC. Operation within the t RAD (max) limit ensures that tRAC (max) can be met. tRAD (max) is specified as a reference point only. If tRAD is greater than the specified tRAD (max) limit, then access time is controlled exclusively by tAA. Assumes three state test load (5 pF and a 380 Ω Thevenin equivalent). Either tRCH or tRRH must be satisfied for a read cycle. tOFF (max) defines the time at which the output achieves the open circuit condition; it is not referenced to output voltage levels. tWCS, tWCH , tRWD, tCWD and tAWD are not restrictive operating parameters. They are included in the datasheet as electrical characteristics only. If t WCS ≥ tWCS (min) and tWCH ≥ tWCH (min), the cycle is an early write cycle and data out pins will remain open circuit, high impedance, throughout the cycle. If tRWD ≥ tRWD (min), tCWD ≥ tCWD (min) and tAWD ≥ tAWD (min), the cycle is a read-write cycle and the data out will contain data read from the selected cell. If neither of the above conditions is satisfied, the condition of the data out at access time is indeterminate. These parameters are referenced to CAS leading edge in early write cycles and to WE leading edge in read-write cycles. Access time is determined by the longest of tCAA or tCAC or tCAP. tASC ≥ tCP to achieve t PC (min) and tCAP (max) values. These parameters are sampled and not 100% tested. AC test conditions - Access times are measured with output reference levels of VOH = 2V and VOL = 0.8 V - Input rise and fall times: 5 ns +3.0V +5V R1 = 828W Dout 90% 10% 90% 100 pF* 10% Don’t care input AAAA AA AAAA AA Rising input AAAA AAAAAA AA *including scope and jig capacitance GND Figure B: Equivalent output load Figure A: Input waveform Key to switching waveforms AAAAAA R2 = 295W AAAA AA AAAA AAAA A AAAA AAAAAA Falling input AAAA AAAA AAAA AAAA AAAA Undefined output 7 AS4C14400 ® Timing waveform of read cycle tRC tRAS tRCD tRSH tRP RAS tCSH tCRP tCAH tASC tRCS tCAS AAAA AAAA AAAA CAS AAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAA tAR tRAD AAAAAAAAAA Address AAAA AAAAAAAA AAAAAA AA tRAH t ASR Row AAAAAAAAAA tRAL AAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Column tRRH tRCH AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA WE AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAA tROH AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA OE AAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA t OEZ tRAC tAA tOEA tOFF tCAC tCLZ AAAAAAA AAAA AAAAAAA AAA I/O Data Out Timing waveform of early write cycle tRC tRAS tRP RAS tCSH tRSH tCRP tRCD tCAS AAAA AAAAAA AAAA AAAAAA CAS AAAA AAAAAA AA AAAA AAAAAA AA tAWR tRAD t RAL tASC AAAAAAAA AA Address AAAA AAAAAAAA AAAAAA AA tASR tRAH Row AAAA AAAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAA AAA tCAH AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA Column tWCR t CWL tRWL tWP tWCS tWCH AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA WE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA OE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tDHR tDS I/O 8 tDH Data In AS4C14400 ® Timing waveform of write cycle (OE controlled) tRC tRAS tRP RAS tCSH tRSH tCRP tRCD t CAS AAAAA AAAA AAAAAA AAAAA CAS AAAAAA AAAA AAAAAA AA AAAAAA t RAL tAWR tRAD tRAH tASR Address AAAA AAAAAAAA AAAAA A AAAAAAAAA tASC tCAH AAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAA Row AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Column tWCR tRWL tCWL WE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA OE AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA tWP tOEH AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA t DHR tOED I/O AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA t DS AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA tDH AAAA AAAA AAAA AAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA Data In Timing waveform of read-write cycle tRWC tRAS tRP RAS tCAS tCRP tRCD tRSH CAS tAR AAAA AAAA AAAA AAAAAAAA AAAA tCSH AAAA AA AAAA AAAAAA AA t RAL tRAD AAAAAAAA AA Address AAAA AAAAAAAA AAAAAA AA AAAA AAAA AA tRAH tASR Row tASC AAAA AAAAA AAAA AAAAAAAA AAAAA A AAAA AAAA A tCAH Column tRWD AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA A tRWL t AWD AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA WE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tRCS tCWL tCWD tOEA tOEZ AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA OE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA tWP AAAA AAAAAAAA AAAAAAAA AAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A tOED tRAC tAA tCAC tCLZ I/O AAA AAA AAA Data Out tDS tDH AAAA AAAA AAAA Data In AAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA 9 AS4C14400 ® Timing waveform of fast page mode read cycle tRASP tRP RAS tCSH tCRP tRCD tRSH AAAA AAAA AAAA AAAA CAS tCAS tCP tPC AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA tAR tRAD tASR Address AAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAA tRAL tASC tRAH AAAA AAAAAAAA AAAAAAA AAA Column AAAA AAAAAAAA AAAA AAAAAAAAAAA AAAAAAAA Row tRCS tRCH WE AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA tOEA OE AAAA AAAAAAAA AAAAAA AA AAAAAAAAAA Column Column tRCS AAAAAA AAAA AAAAAA AA AAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAA tRRH tRCH AAAAAAA AAAA AAAAAAA AAA AAAAAAA AAAAAA AAAA AAAAAA AA tRAC AAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAA tOEA AAAAAAAAAA AAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA tOEZ tCLZ tCAP tOFF tAA AAAA AAAA Data Out AAAA AAAA I/O tCAH tCAC AAA AAA Data Out AAA AAA AAAA AAAA Data Out AAAA AAAA Timing waveform of fast page mode early write cycle tRASP tRAH tRWL RAS tCRP tRCD tPC tCSH tCAS AAAA AAAAA A AAAA AAAAA A CAS Address AAAAAAAAAA AAAA AAAAAAAA AAAAAA AA tRAD Row AAAAAAAAA AAAA AAAAAAAA AAAAA A Column tCP tWCS AAAA AAAAAA AAAA AAAAAA tAR tASR tCAH tASC AAAAAAAA AAAA AAAAAAAA AAAA Column AAAA AAAA AAAA AAAA tRSH tRAL AAAAAA AAAA AAAAAA AA AAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAA AA Column tCWL tWP WE AAAA AAAAAAAA AAAAAAAA A AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A AAAA AAAAAAA AAAA AAAAAAAA AAAAAAA AAA AAAA AAAA AAAA AAAA AAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAA OE tWCH AAAA AAAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAA AAAA AAAA AAAA AAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAA tHDR 10 AAAA AAAAAAAA AAAAAAAA AAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAA AAAAAAAA AA AAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAA AAAA AAAA AAAA AAAA AA AAAA AAAAAAAA AAAAAAAA AA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tOED tDH tDS I/O tOEH Data In AAAA AAAAAA AAAA AAAAAAAA AAAAA Data In AAAA AAAAAA AAAA AAAAAAAA AAAAA Data In AAAA AAAA AAAA AAAAAAAA AAAA AS4C14400 ® Timing waveform of fast page mode read-write cycle t RASP tRP RAS tPCM tCSH tRCD CAS tRAD tASR tCAS AAAA AAAA AAAA AAAA tCP tRAL tRAH tCAH Address AAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAA A Row AAAA AAAAA A Column AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA Column AAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAA tRWD tRCS WE tCWL t CWD AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAA tCRP AAAA AAAA AAAA AAAA tCAH AAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAA tCAH Column tRWL tCWD tCWD t AWD t OEA tAWD tOEZ AAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAA tOED tCWL tWP tOEA OE tAA tDH tRAC tCLZ AAA AAA AAA AAA I/O tCAP tDS tDS tCLZ tCAC AAAA AAAAA A Data In AAAA AAAAA A Data Out AAA AAA AAA AAA tCLZ tCAC AAAA AAAAAA Data In AAAA AAAAAA Data Out AAA AAA AAA AAA tCAC AAAA AAAAAA AAAA AAAAAA Data Out Timing waveform of RAS only refresh cycle Data In (WE = OE = VIH or VIL) t RC tRAS tRP RAS CAS Address tCRP AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A tARS AAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA t RPC tRAH Row AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA Timing waveform of CAS-before-RAS refresh cycle (WE = OE = VIH or VIL) tRC tRP tRAS RAS t RPC tCHR tCPN tCSR CAS AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tOFF I/O 11 AS4C14400 ® Timing waveform of hidden refresh cycle (read) tRC tRC tRAS tPR tRAS tPR RAS tCRP tCHR tRCD tRSH AAA AAA AAA CAS tCRP tAR tRAD tRAH t ASC t ASR Address AAAA AAAA AAAAAA AA AAAAAAAA AAAA AAAAAA Row AAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Column tRCS t RRH WE AAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAA OE AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA tOEA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA tRAC tAA AA AA AA I/O tCAC tOFF tCLZ tOEZ Data Out Timing waveform of hidden refresh cycle (write) tRC tRAS tRP RAS tCRP tRCD tRSH AAAA AAAAAA AA AAAA AAAAAA AA CAS tAR tRAD tRAH tRAL tASR Address AAAA AAAA AAAA AAAAA A AAAA AAAAAAAA AAAAA A tASC tCAH Row AAAA A AAAA A AAAA AAAAA A Column AAAA AAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA t RWL tWCR tWP tWCS tWCH AAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAA AAAAAAAAAAAA AAAAAAAAAAAA AAAAAAA WE AAAA AAAAAAAAAAAA AAAAAAAAAAAA AAAAAAAAAAA AAA tDS AAAAAAAA AAAAAAAA AAAAAAA I/O AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA tDH tDHR Data In AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA OE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA 12 AS4C14400 ® Timing waveform of CAS before RAS refresh counter test cycle tRAS tRP tRSH RAS tCSR tCPT tCAS tCHR AAAA AAAA AAAA CAS tRAL Address tCAH AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Column tAA tCAC tCLZ AA AA AA Read Cycle I/O WE AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tOFF Data Out tRRH tRCH tRCS AAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA tROH tOEA OE AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tRWL t CWL Write Cycle tWP tWCH WE tWCS AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA t DH tDS I/O OE Data In AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA tRCS tWP tCWD Read-Write Cycle WE tAWD AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tCWL tOEA OE tOED AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA t AA tCLZ tDH tOEZ tCAC I/O AAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAA AAA Data Out AAAA AAA AAAA AAA AAAA tDS Data In 13 AS4C14400 ® Typical DC and AC characteristics 1.2 1.1 1.0 0.9 70 4.5 5.0 5.5 Supply voltage (V) Typical supply current ICC vs. supply voltage VCC Supply current (mA) Supply current (mA) 30 20 10 4.5 5.0 5.5 Supply voltage (V) Typical refresh current ICC3 vs. supply voltage VCC 40 30 20 10 6.0 -50 50 -40 40 30 100 150 200 Load capacitance (pF) 250 Typical power-on current IPO vs. cycle rate 1/tRC 70 60 40 30 20 40 30 20 10 0.0 2 Typical refresh current ICC3 vs. ambient temperature Ta 4 6 8 Cycle rate (MHz) 10 Typical TTL stand-by current ICC2 vs. supply voltage VCC 3.5 3.0 50 40 30 20 0.0 –55 50 –10 35 80 125 Ambient temperature (°C) 10 4.5 5.0 5.5 Supply voltage (V) -60 60 50 60 50 70 20 50 70 80 –10 35 80 125 Ambient temperature (°C) Typical supply current ICC vs. ambient temperature Ta 0.0 –55 6.0 Refresh current (mA) Refresh current (mA) 0.9 10 60 14 1.0 60 40 0.0 4.0 1.1 70 50 70 1.2 0.8 –55 6.0 60 0.0 4.0 1.3 Power-on current (mA) 0.8 4.1 1.4 Typical access time tRAC vs. load capacitance CL 90 Stand-by current (mA) 1.3 Ta = 25°C Normalized access time tRAC vs. ambient temperature Ta Typical access time (ns) 1.4 1.5 Normalized access time Normalized access time 1.5 Normalized access time tRAC vs. supply voltage VCC 2.5 2.0 1.5 1.0 0.5 0.0 –10 35 80 125 Ambient temperature (°C) 2 4 6 8 Supply voltage (V) 10 AS4C14400 ® 2.5 2.0 1.5 1.0 0.5 0.0 60 50 40 30 20 10 0.0 0 20 40 60 80 Ambient temperature (°C) 0 20 40 60 80 Ambient temperature (°C) Capacitance Parameter Input capacitance I/O capacitance Typical fast page mode current ICC4 vs. supply voltage VCC 70 Fast page mode current (mA) 3.0 Stand-by current (mA) Typical fast page mode current ICC4 vs. ambient temperature Ta 70 Fast page mode current (mA) Typical TTL stand-by current ICC2 vs. ambient temperature Ta 3.5 60 50 40 30 20 10 0.0 4.0 4.5 5.0 5.5 Supply voltage (V) 6.0 (f = 1 MHz, Ta = Room Temperature) Symbol Signals Test Conditions Max Unit CIN1 A0 to A8 Vin = 0V 5 pF CIN2 RAS, CAS, WE, OE Vin = 0V 7 pF CI/O I/O0 to I/O3 Vin = Vout = 0V 7 pF 15 AS4C14400 ® Ordering codes Package \ RAS Access Time 40 ns 50 ns 60 ns 70 ns Plastic SOJ, 300 mil, 20/26-pin AS4C14400-40JC AS4C14405-40JC AS4C14400-50JC AS4C14405-50JC AS4C14400-60JC AS4C14405-60JC AS4C14400-70JC AS4C14405-70JC Plastic TSOP, 300 mil, 20/26-pin AS4C14400-40TC AS4C14405-40TC AS4C14400-50TC AS4C14405-50TC AS4C14400-60TC AS4C14405-60TC AS4C14400-70TC AS4C14405-70TC Shaded areas contain advance information. Part numbering system AS4C DRAM Prefix 14400 Device number –XX X RAS access time C Package: J = SOJ 300 mil, T = TSOP 300 mil Commercial temperature range, 0°C to 70 °C Representatives, distributors, and sales offices DOMESTIC REPS ALABAMA Concord Component (205) 772-8883 ARKANSAS Southern States Marketing (214) 238-7500 CALIFORNIA NORTH Brooks Technical (415) 960-3880 LA AREA Competitive Tech. (714) 450-0170 SAN DIEGO ATS (619) 634-1488 KANSAS CenTech (816) 358-8100 KENTUCKY CC Electro Sales (317) 921-5000 LOUISIANA Southern States Marketing NORTH (214) 238-7500 SOUTH (713) 895-8533 MAINE Kitchen & Kutchin (617) 229-2660 TEXAS Southern States Marketing EUROPE Britcomp Sales ERA Associates (800) 645-5500 AUSTIN SURREY, E NGLAND SOUTH DALLA NEW JERSEY NORTH Electro Tech (610) 272-2125 NEW YORK NYC ERA Associates (516) 543-0510 UPSTATE Tri-Tech R OCHESTER (716) 385-6500 BINGHAMTON (607) 722-3580 COLORADO Technology Sales (303) 692-8835 MARYLAND Chesapeake Tech. 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LYNDHURST (216) 381-8575 DAYTON (513) 433-2511 OKLAHOMA Southern States Marketing (214) 238-7500 (512) 835-5822 (214) 238-7500 HOUSTON +44-1932 347077 +44-1932 346256 MUNICH, GERMANY +49-894488496 (713) 895-8533 ATHISMONS, F RANCE UTAH Charles Fields & Assoc. (801) 299-8228 +33-1-69387678 VERMONT Kitchen & Kutchin (617) 229-2660 VIRGINIA Chesapeake Tech. (301) 236-0530 WASHINGTON ES/Chase (206) 823-9535 WEST VIRGINIA Chesapeake Tech. (301) 236-0530 WISCONSIN D. A. Case Associates (612) 831-6777 WYOMING Technology Sales (303)692-8835 DISTRIBUTORS All American HQ: (305) 621-8282 +44-1773-740263 Ramtec Int’l B.V. HOLLAND, SPAIN, ITALY, BELGIUM, HUNGARY, RUSSIA +31-2526-21222 HONG KONG Eastele Technology +852-2798-8860 INDIA Priya Electronics, Inc. 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HQ: (800) 556-0225 Future Electronics HQ: (514) 594-7710 Interface Electronics HQ: (800) 632-7792 Please contact your rep to locate a distributor near you SALES OFFICES HEADQUARTERS Alliance Semiconductor San Jose, CA (408) 383-4900 NORTHEAST AREA Alliance Semiconductor Boston, MA (617) 239-8127 TECHNICAL CENTER TAIWAN Alliance Semiconductor Tel:+886-2-516-7995 Fax:+886-2-517-4928 [email protected] Woo Young Tech +822-369-7099 MALAYSIA Exer Technologies +65-741-4655 PUERTO RICO Micro-Electronic Comp. (787) 746-9897 SINGAPORE Exer Technologies +60-4-657-9592 Alliance Semiconductor reserves the right to make changes in this data sheet at any time to improve design and supply the best product possible. Publication of advance information does not constitute a committment to produce or supply the product described. The company cannot assume responsibility for circuits shown or represent that they are free from patent infringement. Alliance products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of Alliance. ProMotion® and the Alliance logo are registered trademarks of Alliance Semiconductor Corporation. All other trademarks are property of their respective holders. ALLIANCE SEMICONDUCTOR Printed in U.S.A.he 3099 North First Street San Jose, CA 95134 (408) 383-4900 Fax (408) 383-4999 Copyright © 1996 All rights reserved. June 1996