Philips Semiconductors Product specification 3.3V Octal buffer/line driver with 30 series termination resistors; 3-State FEATURES 74LVT2241 DESCRIPTION • Octal bus interface • 3-State buffers • Output capability: +12mA/-12mA • TTL input and output switching levels • Input and output interface capability to systems at 5V supply • Bus-hold data inputs eliminate the need for external pull-up The 74LVT2241 high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive. The 74LVT2241 device is an octal buffer that is ideal for driving bus lines. The device features two Output Enables (1OE, 2OE), each controlling four of the 3-State outputs. The 74LVT2241 is designed with 30Ω series resistance in both the High and Low states of the output. This design reduces the line noise in applications such as memory address drivers, clock drivers and bus receivers/transmitters. resistors to hold unused inputs Power-up 3-State • • Live insertion/extraction permitted • No bus current loading when output is tied to 5V bus • Latch-up protection exceeds 500mA per JEDEC Std 17 • ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model. • Outputs include series resistance of 30Ω, making external termination resistors unnecessary. QUICK REFERENCE DATA SYMBOL CONDITIONS Tamb = 25°C; GND = 0V PARAMETER tPLH tPHL Propagation delay nAx to nYx CL = 50pF; VCC = 3.3V CIN TYPICAL UNIT 3.0 3.3 ns pF Input capacitance VI = 0V or 3.0V 4 COUT Output capacitance Outputs disabled; VO = 0V or 3.0V 8 pF ICCZ Total supply current Outputs disabled; VCC = 3.6V 0.12 mA ORDERING INFORMATION TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER 20-Pin Plastic SOL PACKAGES –40°C to +85°C 74LVT2241 D 74LVT2241 D SOT163-1 20-Pin Plastic SSOP Type II –40°C to +85°C 74LVT2241 DB 74LVT2241 DB SOT339-1 20-Pin Plastic TSSOP Type I –40°C to +85°C 74LVT2241 PW 7LVT2241PW DH SOT360-1 PIN CONFIGURATION PIN DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION 2, 4, 6, 8 1A0 – 1A3 Data inputs 17, 15, 13, 11 2A0 – 2A3 Data inputs 18, 16, 14, 12 1Y0 – 1Y3 Data outputs 1OE 1 20 VCC 1A0 2 19 2OE 2Y0 3 18 1Y0 1A1 4 17 2A0 3, 5, 7, 9 2Y0 – 2Y3 Data outputs 2Y1 5 16 1Y1 1, 19 1OE, 2OE Output enables 1A2 6 15 2A1 10 GND Ground (0V) 2Y2 7 14 1Y2 1A3 8 13 2A2 20 VCC Positive supply voltage 2Y3 9 12 1Y3 11 2A3 GND 10 SA00038 1996 May 29 1 853-1840 16867 Philips Semiconductors Product specification 3.3V Octal buffer/line driver with 30 series termination resistors; 3-State LOGIC SYMBOL (IEEE/IEC) 74LVT2241 LOGIC SYMBOL 2 1A0 1Y0 1A1 1Y1 1A2 1Y2 1A3 1Y3 18 1 EN 4 2 18 4 16 6 14 8 12 6 8 1 17 19 15 EN 17 3 15 5 13 7 11 9 13 11 19 16 14 12 1OE 2A0 2Y0 2A1 2Y1 2A2 2Y2 2A3 2Y3 3 5 7 9 2OE SA00039 SA00040 FUNCTION TABLE SCHEMATIC OF EACH OUTPUT INPUTS VCC OUTPUTS 1OE 1An 2OE 2An 1Yn 2Yn L L H L L L L H H H H H H X L X Z Z VCC H L X Z 22Ω OUTPUT 20Ω = High voltage level = Low voltage level = Don’t care = High impedance “off ” state SW00202 ABSOLUTE MAXIMUM RATINGS1, 2 PARAMETER RATING UNIT DC supply voltage –0.5 to +4.6 V voltage3 –0.5 to +7.0 V Output in Off or High state –0.5 to +7.0 V Output in Low state 128 Output in High state –64 SYMBOL VCC VI DC input VOUT DC output voltage3 IOUT DC output current CONDITIONS mA IIK DC input diode current VI < 0 –50 mA IOK DC output diode current VO < 0 –50 mA Tstg Storage temperature range –65 to 150 °C NOTES: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C. 3. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. 1996 May 29 2 Philips Semiconductors Product specification 3.3V Octal buffer/line driver with 30 series termination resistors; 3-State 74LVT2241 RECOMMENDED OPERATING CONDITIONS SYMBOL VCC LIMITS PARAMETER DC supply voltage UNIT MIN MAX 2.7 3.6 V 0 5.5 V VI Input voltage VIH High-level input voltage VIL Low-level Input voltage 0.8 V IOH High-level output current –12 mA IOL 2.0 V Low-level output current 12 mA ∆t/∆v Input transition rise or fall rate; outputs enabled 10 ns/V Tamb Operating free-air temperature range +85 °C –40 DC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = -40°C to +85°C MIN VIK Input clamp voltage VCC = 2.7V; II = –18mA VOH High-level output voltage VCC = 3V; IOH = –12mA VOL Low-level output voltage VCC = 3V; IOL = 12mA 2 Input leakage current VCC = 3.6V; VI = VCC or GND VCC = 3.6V; VI = VCC IHOLD Output off current Bus hold current A inputs Control pins Data pins4 VCC = 3.6V; VI = 0 IOFF MAX 0.9 –1.2 2.2 VCC = 0V; VI or VO = 0 to 4.5V VCC = 3.0V; VI = 0.8V A inputs VCC = 3.0V; VI = 2.0V 1 10 ±0.1 ±1 0.1 1 –1 -5 1 ±100 75 150 -75 –150 UNIT V V 0.8 VCC = 0 or 3.6V; VI = 5.5V II TYP1 V µA µA µA Current into an output in the High state when VO > VCC VO = 5.5V; VCC = 3.0V 60 125 µA Power up/down 3-State output current3 VCC = ≤ 1.2V; VO = 0.5V to VCC; VI = GND or VCC; OE/OE = Don’t care ±1 ±100 µA IOZH 3-State output High current VCC = 3.6V; VO = 3.0V 1 5 µA IOZL 3-State output Low current VCC = 3.6V; VO = 0.5V –1 –5 µA 0.12 0.19 IEX IPU/PD ICCH ICCL VCC = 3.6V; Outputs High, VI = GND or VCC, IO = 0 Quiescent supply current ICCZ ∆ICC Additional supply current per input pin2 VCC = 3.6V; Outputs Low, VI = GND or VCC, IO = 0 3 12 VCC = 3.6V; Outputs Disabled; VI = GND or VCC, IO = 05 0.12 0.19 VCC = 3.0 to 3.6V; One input at VCC -0.6V; Other inputs at VCC or GND 0.1 0.25 mA mA NOTES: 1. All typical values are at Tamb = 25°C. 2. This is the increase in supply current for each input at VCC –0.6V. 3. This parameter is valid for any VCC between 0V and 1.2V with a transition time of up to 10msec. From VCC = 1.2V to VCC = 3.3V ± 10% a transition time of 100µsec is permitted. This parameter is valid for Tamb = 25°C only. 4. Unused pins at VCC or GND 5. ICCZ is measured with outputs pulled to VCC or GND. 1996 May 29 3 Philips Semiconductors Product specification 3.3V Octal buffer/line driver with 30 series termination resistors; 3-State 74LVT2241 AC CHARACTERISTICS GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω;Tamb = –40°C to +85°C. LIMITS SYMBOL PARAMETER Tamb = –40°C to +85°C VCC = +3.3V ±0.3V VCC = 2.7V MIN TYP1 MAX MAX WAVEFORM UNIT tPLH tPHL Propagation delay nAx to nYx 1 1 1 3.0 3.3 4.2 4.3 5.0 4.7 ns tPZH tPZL Output enable time to High and Low level, 1OE to 1Yn 2 1 1 4.4 4.3 6.2 5.9 8.5 6.8 ns tPHZ tPLZ Output disable time from High and Low level, 1OE to 1Yn 2 1 1.6 3.4 3.2 5.0 4.5 5.2 4.5 ns tPZH tPZL Output enable time to High and Low level, 2OE to 2Yn 2 1 1 4.4 4.1 6.2 5.5 7.9 6.2 ns tPHZ tPLZ Output disable time from High and Low level, 2OE to 2Yn 2 1 1 3.9 3.8 5.7 5.1 6.4 5.8 ns NOTE: 1. All typical values are at VCC = 3.3V and Tamb = 25°C. AC WAVEFORMS VM = 1.5V, VIN = GND to 3.0V OE INPUT VM VM OE INPUT VM VM An INPUT tPLZ tPZL tPLH tPHL Yn OUTPUT VM VM VOL + 0.3V VM Yn OUTPUT tPHZ tPZH Yn OUTPUT VOL VOH VOH – 0.3V SA00028 Waveform 1. Waveforms Showing the Input (An) to Output (Yn) Propagation Delays 3.5V VM 0V SA00041 Waveform 2. Waveforms Showing the 3–State Output Enable and Disable Times 1996 May 29 4 Philips Semiconductors Product specification 3.3V Octal buffer/line driver with 30 series termination resistors; 3-State 74LVT2241 TEST CIRCUIT AND WAVEFORMS 6.0V VCC Open VIN VOUT PULSE GENERATOR RL GND tW 90% NEGATIVE PULSE 90% VM VM 10% 10% D.U.T. RT 0V CL tTHL (tF) RL tTLH (tR) tTLH (tR) tTHL (tF) 90% Test Circuit for 3-State Outputs POSITIVE PULSE AMP (V) 90% VM VM 10% 10% tW SWITCH POSITION TEST SWITCH tPLH/tPHL Open tPLZ/tPZL 6V tPHZ/tPZH GND AMP (V) 0V VM = 1.5V Input Pulse Definition INPUT PULSE REQUIREMENTS DEFINITIONS FAMILY RL = Load resistor; see AC CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. 74LVT Amplitude Rep. Rate 2.7V 10MHz tW tR tF 500ns 2.5ns 2.5ns RT = Termination resistance should be equal to ZOUT of pulse generators. SV00092 1996 May 29 5