SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 D D D D DGG OR DL PACKAGE (TOP VIEW) Member of the Texas Instruments Widebus Family EPIC (Enhanced-Performance Implanted CMOS) Submicron Process Designed to Comply With JEDEC 168-Pin and 200-Pin SDRAM Buffered DIMM Specification Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors Package Options Include Plastic Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages OE Y1 Y2 GND Y3 Y4 VCC Y5 Y6 Y7 GND Y8 Y9 Y10 Y11 Y12 Y13 GND Y14 Y15 Y16 VCC Y17 Y18 GND Y19 Y20 NC description This 20-bit universal bus driver is designed for 1.65-V to 3.6-V VCC operation. Data flow from A to Y is controlled by the output-enable (OE) input. The device operates in the transparent mode when the latch-enable (LE) input is low. The A data is latched if the clock (CLK) input is held at a high or low logic level. If LE is high, the A data is stored in the latch/flip-flop on the low-to-high transition of CLK. When OE is high, the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. 1 56 2 55 3 54 4 53 5 52 6 51 7 50 8 49 9 48 10 47 11 46 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 25 32 26 31 27 30 28 29 CLK A1 A2 GND A3 A4 VCC A5 A6 A7 GND A8 A9 A10 A11 A12 A13 GND A14 A15 A16 VCC A17 A18 GND A19 A20 LE PRODUCT PREVIEW D NC – No internal connection Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. The SN74ALVCH16836 is characterized for operation from –40°C to 85°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. EPIC and Widebus are trademarks of Texas Instruments Incorporated. Copyright 1999, Texas Instruments Incorporated PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 FUNCTION TABLE INPUTS CLK A OUTPUT Y X X X Z L X L L L L X H H L H ↑ L L L H ↑ H L H H X H Y0† OE LE H L Y0‡ † Output level before the indicated steady-state input conditions were established, provided that CLK is high before LE goes low ‡ Output level before the indicated steady-state input conditions were established L H L X PRODUCT PREVIEW logic symbol§ OE CLK LE 1 EN1 56 29 2C3 C3 G2 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 Y16 Y17 Y18 Y19 Y20 2 1 1 3 D 3 54 5 52 6 51 8 49 9 48 10 47 12 45 13 44 14 43 15 42 16 41 17 40 19 38 20 37 21 36 23 34 24 33 26 31 27 30 § This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2 55 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 logic diagram (positive logic) 1 OE 56 CLK LE 29 55 A1 1D C1 2 Y1 CLK absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V Output voltage range, VO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Continuous output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous current through each VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA Package thermal impedance, θJA (see Note 3): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81°C/W DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” 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. NOTES: 1. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. This value is limited to 4.6 V maximum. 3. The package thermal impedance is calculated in accordance with JESD 51. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 PRODUCT PREVIEW To 19 Other Channels SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 recommended operating conditions (see Note 4) VCC Supply voltage VIH High-level input voltage VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V MIN MAX 1.65 3.6 2 0.35 × VCC Low-level input voltage VI VO Input voltage 0 Output voltage 0 0.7 VCC = 2.7 V to 3.6 V PRODUCT PREVIEW IOL ∆t/∆v High level output current High-level VCC = 2.7 V VCC = 3 V VCC = 1.65 V VCC = 2.3 V Low level output current Low-level VCC = 2.7 V VCC = 3 V Input transition rise or fall rate V 1.7 VIL IOH V 0.65 × VCC VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 1.65 V VCC = 2.3 V UNIT V 0.8 VCC VCC V V –4 –12 –12 mA –24 4 12 12 mA 24 10 ns/V TA Operating free-air temperature –40 85 °C NOTE 4: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) TEST CONDITIONS VCC 1.65 V to 3.6 V IOH = –100 µA IOH = –4 mA 1.65 V IOH = –6 mA VOH IOH = –12 mA IOH = –24 mA IOL = 100 µA IOZ ICC ∆ICC Ci Data inputs 2 2.3 V 1.7 2.7 V 2.2 3V 2.4 3V 2 UNIT V 0.2 2.3 V 0.4 2.3 V 0.7 2.7 V 0.4 3V 0.55 ±5 3.6 V VI = 0.58 V VI = 1.07 V 1.65 V 25 1.65 V –25 VI = 0.7 V VI = 1.7 V 2.3 V 45 2.3 V –45 VI = 0.8 V VI = 2 V 3V 75 3V –75 V µA µA VI = 0 to 3.6 V‡ 3.6 V ±500 VO = VCC or GND VI = VCC or GND, 3.6 V ±10 µA 3.6 V 40 µA 3 V to 3.6 V 750 µA One input at VCC – 0.6 V, Control inputs 2.3 V 0.45 IOL = 24 mA VI = VCC or GND II(hold) ( ) MAX VCC–0.2 1.2 1.65 V IOL = 12 mA II TYP† 1.65 V to 3.6 V IOL = 4 mA IOL = 6 mA VOL MIN IO = 0 Other inputs at VCC or GND VI = VCC or GND 33V 3.3 PRODUCT PREVIEW PARAMETER pF Co Outputs VO = VCC or GND 3.3 V pF † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figures 1 through 3) VCC = 1.8 V MIN fclock Clock frequency tw Pulse duration MAX VCC = 2.5 V ± 0.2 V MIN MAX VCC = 2.7 V MIN MAX VCC = 3.3 V ± 0.3 V MIN UNIT MAX MHz LE low ns CLK high or low Data before CLK↑ tsu th Setup time Hold time ns CLK high Data before LE↑ CLK low Data after CLK↑ Data after LE↑ ns CLK high or low PRODUCT PREVIEW switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figures 1 through 3) FROM (INPUT) PARAMETER TO (OUTPUT) VCC = 1.8 V MIN TYP VCC = 2.5 V ± 0.2 V MIN MAX VCC = 2.7 V MIN MAX VCC = 3.3 V ± 0.3 V MIN UNIT MAX fmax MHz A tpd Y ns OE Y ns OE Y ns LE CLK ten tdis operating characteristics, TA = 25°C PARAMETER Cpd d 6 Power dissipation capacitance TEST CONDITIONS Outputs enabled Outputs disabled CL = 0 0, POST OFFICE BOX 655303 VCC = 1.8 V TYP f = 10 MHz • DALLAS, TEXAS 75265 VCC = 2.5 V TYP VCC = 3.3 V TYP UNIT pF SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 PARAMETER MEASUREMENT INFORMATION VCC = 1.8 V 2 × VCC S1 1 kΩ From Output Under Test Open GND CL = 30 pF (see Note A) 1 kΩ TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND LOAD CIRCUIT tw VCC VCC/2 VCC/2 VCC/2 VCC/2 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VCC/2 VCC/2 0V tPLH Output Control (low-level enabling) tPLZ VCC VCC/2 tPZH VOH VCC/2 VOL VCC/2 0V Output Waveform 1 S1 at 2 × VCC (see Note B) tPHL VCC/2 VCC VCC/2 tPZL VCC Input VOLTAGE WAVEFORMS PULSE DURATION th VCC Data Input VCC/2 0V 0V tsu Output VCC Input PRODUCT PREVIEW Timing Input Output Waveform 2 S1 at GND (see Note B) VOL + 0.15 V VOL tPHZ VCC/2 VOH VOH – 0.15 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 PARAMETER MEASUREMENT INFORMATION VCC = 2.5 V ± 0.2 V 2 × VCC S1 500 Ω From Output Under Test Open GND CL = 30 pF (see Note A) 500 Ω TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND LOAD CIRCUIT tw VCC Timing Input VCC/2 0V VOLTAGE WAVEFORMS PULSE DURATION th VCC Data Input VCC/2 VCC/2 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Output Control (low-level enabling) VCC VCC/2 VCC Input VCC/2 VCC/2 0V tPLH Output Waveform 1 S1 at 2 × VCC (see Note B) VOH VCC/2 tPLZ VCC VCC/2 tPZH tPHL VCC/2 VOL VCC/2 0V tPZL Output VCC/2 0V tsu PRODUCT PREVIEW VCC VCC/2 Input Output Waveform 2 S1 at GND (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOL + 0.15 V VOL tPHZ VCC/2 VOH VOH – 0.15 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. Figure 2. Load Circuit and Voltage Waveforms 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN74ALVCH16836 20-BIT UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS SCES089C – OCTOBER 1996 – REVISED FEBRUARY 1999 PARAMETER MEASUREMENT INFORMATION VCC = 2.7 V AND 3.3 V ± 0.3 V 6V S1 500 Ω From Output Under Test GND CL = 50 pF (see Note A) TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 6V GND Open 500 Ω tw LOAD CIRCUIT 2.7 V 2.7 V Timing Input Input 1.5 V 1.5 V 1.5 V 0V 0V tsu VOLTAGE WAVEFORMS PULSE DURATION th 1.5 V 1.5 V 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 2.7 V Output Control (low-level enabling) 1.5 V Input 1.5 V 1.5 V 0V tPLH Output Waveform 1 S1 at 6 V (see Note B) 1.5 V tPLZ 3V 1.5 V VOL + 0.3 V VOL tPZH tPHL VOH Output 1.5 V 0V tPZL 2.7 V 1.5 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES PRODUCT PREVIEW 2.7 V Data Input Output Waveform 2 S1 at GND (see Note B) tPHZ 1.5 V VOH VOH – 0.3 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. Figure 3. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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