SN54ABT16540, SN74ABT16540A 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208C – FEBRUARY 1991 – REVISED APRIL 1997 D D D D D D D D SN54ABT16540 . . . WD PACKAGE SN74ABT16540A . . . DGG, DGV, OR DL PACKAGE (TOP VIEW) Members of the Texas Instruments Widebus Family State-of-the-Art EPIC-ΙΙB BiCMOS Design Significantly Reduces Power Dissipation Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17 Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise Flow-Through Architecture Optimizes PCB Layout High-Drive Outputs (–32-mA IOH, 64-mA IOL) Package Options Include Plastic 300-mil Shrink Small-Outline (DL), Thin Shrink Small-Outline (DGG), and Thin Very Small-Outline (DGV) Packages, and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings 1OE1 1Y1 1Y2 GND 1Y3 1Y4 VCC 1Y5 1Y6 GND 1Y7 1Y8 2Y1 2Y2 GND 2Y3 2Y4 VCC 2Y5 2Y6 GND 2Y7 2Y8 2OE1 description The SN54ABT16540 and SN74ABT16540A are inverting 16-bit buffers/drivers composed of two 8-bit sections with separate output-enable gates. These buffers and bus drivers provide a high-performance bus interface for wide data paths. 1 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 11 38 12 37 13 36 14 35 15 34 16 33 17 32 18 31 19 30 20 29 21 28 22 27 23 26 24 25 1OE2 1A1 1A2 GND 1A3 1A4 VCC 1A5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCC 2A5 2A6 GND 2A7 2A8 2OE2 The 3-state control gate is a 2-input AND gate with active-low inputs so that if either output-enable (OE1 or OE2) input is high, all corresponding 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. The SN54ABT16540 is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74ABT16540A 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. Widebus and EPIC-ΙΙB are trademarks of Texas Instruments Incorporated. Copyright 1997, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54ABT16540, SN74ABT16540A 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208C – FEBRUARY 1991 – REVISED APRIL 1997 FUNCTION TABLE (each 8-bit section) INPUTS OE1 OE2 A OUTPUT Y L L L H L L H L H X X Z X H X Z logic symbol† 1OE1 1 & 48 EN1 1OE2 2OE1 2OE2 1A1 1A2 1A3 1A4 1A5 1A6 1A7 1A8 2A1 2A2 2A3 2A4 2A5 2A6 2A7 2A8 24 & EN2 25 47 1 46 2 1 3 44 5 43 6 41 8 40 9 38 11 37 12 36 13 1 35 2 14 33 16 32 17 30 19 29 20 27 22 26 23 1Y1 1Y2 1Y3 1Y4 1Y5 1Y6 1Y7 1Y8 2Y1 2Y2 2Y3 2Y4 2Y5 2Y6 2Y7 2Y8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic diagram (positive logic) 1OE1 1OE2 1A1 1 2OE1 48 47 2OE2 2 1Y1 2A1 24 25 36 To Seven Other Channels 2 POST OFFICE BOX 655303 13 2Y1 To Seven Other Channels • DALLAS, TEXAS 75265 SN54ABT16540, SN74ABT16540A 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208C – FEBRUARY 1991 – REVISED APRIL 1997 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Voltage range applied to any output in the high or power-off state, VO . . . . . . . . . . . . . . . . . . . –0.5 V to 5.5 V Current into any output in the low state, IO: SN54ABT16540 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74ABT16540A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Package thermal impedance, θJA (see Note 2): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89°C/W DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93°C/W DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94°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 and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51. recommended operating conditions (see Note 3) SN54ABT16540 VCC VIH Supply voltage VIL VI Low-level input voltage IOH IOL High-level output current ∆t/∆v Input transition rise or fall rate High-level input voltage SN74ABT16540A MIN MAX MIN MAX 4.5 5.5 4.5 5.5 2 2 0.8 Input voltage 0 Low-level output current Outputs enabled TA Operating free-air temperature NOTE 3: Unused inputs must be held high or low to prevent them from floating. –55 VCC –24 V V 0.8 0 UNIT VCC –32 V V mA 48 64 mA 10 10 ns/V 85 °C 125 –40 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 3 SN54ABT16540, SN74ABT16540A 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208C – FEBRUARY 1991 – REVISED APRIL 1997 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –3 mA VCC = 5 V, VCC = 4 4.5 5V VOL VCC = 4 4.5 5V Vhys II TA = 25°C TYP† MAX SN54ABT16540 MIN –1.2 MAX SN74ABT16540A MIN –1.2 MAX –1.2 2.5 2.5 2.5 IOH = –3 mA IOH = –24 mA 3 3 3 2 2 IOH = –32 mA IOL = 48 mA 2* VCC = 5.5 V, VCC = 0, VO = 0.5 V VI or VO ≤ 4.5 V ICEX VCC = 5.5 V, VO = 5.5 V Outputs high IO‡ VCC = 5.5 V, IOZH IOZL Ioff VCC = 5.5 V, IO = 0, VI = VCC or GND ICC Data inputs Control inputs Ci VO = 2.5 V Outputs high 0.55 0.55* 0.55 Outputs low ±1 µA 10 50 10 µA –10 –50 –10 µA ±100 µA 50 µA –180 mA 50 –180 50 –50 –180 –50 3 2 3 34 32 34 Outputs disabled 3 2 3 VCC = 5.5 V, Outputs enabled One input at 3.4 V,, Other inputs at Outputs disabled VCC or GND VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND 1 1 1 0.05 0.05 0.05 1.5 1.5 1.5 VI = 2.5 V or 0.5 V VO = 2.5 V or 0.5 V Co ±1 ±100 –100 V mV ±1 –50 V V 100 VI = VCC or GND VO = 2.7 V UNIT 2 0.55 IOL = 64 mA VCC = 5.5 V, VCC = 5.5 V, ∆ICC§ MIN mA mA 3.5 pF 7.5 pF * On products compliant to MIL-PRF-38535, this parameter does not apply. † All typical values are at VCC = 5 V. ‡ Not more than one output should be tested at a time, and the duration of the test should not exceed one second. § This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y PARAMETER VCC = 5 V, TA = 25°C SN54ABT16540 MIN TYP MAX MIN MAX MIN MAX 1 2.3 3.3 1 4.2 1 4.1 1.1 2.5 4.1 1.1 4.4 1.1 4.3 1.1 3.1 4.2 1.1 5.2 1.1 5.1 1.6 3.7 4.8 1.6 6 1.6 5.9 1.6 4 5 1.6 5.4 1.6 5.7 1.4 3.2 4.4 1.4 4.7 1.4 4.7 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. 4 SN74ABT16540A POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT ns ns ns SN54ABT16540, SN74ABT16540A 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208C – FEBRUARY 1991 – REVISED APRIL 1997 PARAMETER MEASUREMENT INFORMATION 500 Ω From Output Under Test S1 7V Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 7V Open 3V LOAD CIRCUIT Timing Input 1.5 V 0V tw tsu 3V th 3V 1.5 V Input 1.5 V Data Input 0V 1.5 V 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATION 3V 3V 1.5 V Input Output Control 1.5 V 0V 1.5 V 1.5 V VOL tPLH tPHL VOH Output 1.5 V 1.5 V VOL 1.5 V 0V tPLZ Output Waveform 1 S1 at 7 V (see Note B) VOH Output 1.5 V tPZL tPHL tPLH 1.5 V Output Waveform 2 S1 at Open (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS 1.5 V 3.5 V VOL + 0.3 V VOL tPHZ tPZH 1.5 V VOH – 0.3 V VOH ≈0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING 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. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 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. 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