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| SN54ABT16540, SN74ABT16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208A - FEBRUARY 1991 - REVISED JULY 1994 * * * * * * * * Members of the Texas Instruments Widebus TM Family State-of-the-Art EPIC-BTM 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 = 25C 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) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings SN54ABT16540 . . . WD PACKAGE SN74ABT16540 . . . DGG OR DL PACKAGE (TOP VIEW) description These 16-bit buffers and bus drivers provide a high-performance bus interface for wide data paths. 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. 1OE1 1Y1 1Y2 GND 1Y3 1Y4 VCC 1Y5 1Y6 GND 1Y7 1Y8 2Y1 2Y2 GND 2Y3 2Y4 VCC 2Y5 2Y6 GND 2Y7 2Y8 2OE1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 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 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 SN74ABT16540 is available in TI's shrink small-outline package (DL), which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area. The SN54ABT16540 is characterized for operation over the full military temperature range of - 55C to 125C. The SN74ABT16540 is characterized for operation from - 40C to 85C. FUNCTION TABLE (each 8-bit section) INPUTS OE1 L L H X OE2 L L X H A L H X X OUTPUT Y H L Z Z Widebus and EPIC-B are trademarks of 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 Copyright (c) 1994, Texas Instruments Incorporated * DALLAS, TEXAS 75265 3-1 SN54ABT16540, SN74ABT16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208A - FEBRUARY 1991 - REVISED JULY 1994 logic symbol 1OE1 1OE2 2OE1 2OE2 24 25 & EN2 1 48 & EN1 logic diagram (positive logic) 1OE1 1OE2 1 48 1A1 47 2 1Y1 1A1 1A2 1A3 1A4 1A5 1A6 1A7 1A8 2A1 2A2 2A3 2A4 2A5 2A6 2A7 2A8 47 46 44 43 41 40 38 37 36 35 33 32 30 29 27 26 1 1 2 3 5 6 8 9 11 12 1Y1 1Y2 1Y3 1Y4 1Y5 1Y6 1Y7 1Y8 2Y1 2Y2 2Y3 2Y4 2Y5 2Y6 2Y7 2Y8 To Seven Other Channels 2A1 36 13 2Y1 2OE1 2OE2 24 25 To Seven Other Channels 1 2 13 14 16 17 19 20 22 23 This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 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 state or power-off state, VO . . . . . . . . . . . . . - 0.5 V to 5.5 V Current into any output in the low state, IO: SN54ABT16540 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74ABT16540 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -18 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 50 mA Maximum power dissipation at TA = 55C (in still air) (see Note 2): DGG package . . . . . . . . . . . . . . . . . 0.85 W DL package . . . . . . . . . . . . . . . . . . . . 1.2 W Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C 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 maximum package power dissipation is calculated using a junction temperature of 150C and a board trace length of 750 mils. For more information, refer to the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology Data Book, literature number SCBD002B. 3-2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54ABT16540, SN74ABT16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208A - FEBRUARY 1991 - REVISED JULY 1994 recommended operating conditions (see Note 3) SN54ABT16540 MIN VCC VIH VIL VI IOH IOL t /v Supply voltage High-level input voltage Low-level input voltage Input voltage High-level output current Low-level output current Input transition rise or fall rate Outputs enabled - 55 0 4.5 2 0.8 VCC - 24 48 10 125 - 40 0 MAX 5.5 SN74ABT16540 MIN 4.5 2 0.8 VCC - 32 64 10 85 MAX 5.5 UNIT V V V V mA mA ns/ V C TA Operating free-air temperature NOTE 3: Unused or floating inputs must be held high or low. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, VCC = 5 V, VCC = 4 5 V 4.5 VOL II IOZH IOZL Ioff ICEX IO Outputs high Outputs high ICC Outputs low Outputs disabled VCC = 5.5 V, IO = 0, VI = VCC or GND VCC = 5.5 V, One input at 3.4 V, 3 4 V Other inputs at VCC or GND VCC = 4 5 V 4.5 VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 0, VCC = 5.5 V, VCC = 5.5 V, II = -18 mA IOH = - 3 mA IOH = - 3 mA IOH = - 24 mA IOH = - 32 mA IOL = 48 mA IOL = 64 mA VI = VCC or GND VO = 2.7 V VO = 0.5 V VI or VO 4.5 V VO = 5.5 V VO = 2.5 V - 50 -100 MIN 2.5 3 2 2* 0.55 0.55* 1 50 - 50 100 50 -180 2 32 2 1 - 50 50 -180 2 32 2 1 - 50 1 50 - 50 0.55 0.55 1 50 - 50 100 50 -180 2 32 2 1 mA mA TA = 25C TYP MAX -1.2 2.5 3 2 2 V A A A A A mA SN54ABT16540 MIN MAX -1.2 2.5 3 V SN74ABT16540 MIN MAX -1.2 UNIT V VOH Outputs enabled Data inputs ICC Control inputs Ci Outputs disabled 0.05 1.5 7 0.05 1.5 0.05 1.5 VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND VI = 2.5 V or 0.5 V VO = 2.5 V or 0.5 V pF pF Co 7 * On products compliant to MIL-STD-883, Class B, 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. 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 3-3 SN54ABT16540, SN74ABT16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208A - FEBRUARY 1991 - REVISED JULY 1994 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) A TO (OUTPUT) Y Y Y VCC = 5 V, TA = 25C MIN 1 1.1 1.1 1.6 1.6 1.4 TYP 2.3 2.5 3.1 3.7 3.4 2.9 MAX 3.3 4.1 4.2 4.8 4.6 4.1 SN54ABT16540 MIN 1 1.1 1.1 1.6 1.6 1.4 MAX 4.2 4.4 5.2 6 5.4 4.7 SN74ABT16540 MIN 1 1.1 1.1 1.6 1.6 1.4 MAX 4.1 4.3 5.1 5.9 5.3 4.4 ns ns ns UNIT OE OE 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. 3-4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54ABT16540, SN74ABT16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208A - FEBRUARY 1991 - REVISED JULY 1994 PARAMETER MEASUREMENT INFORMATION 7V From Output Under Test CL = 50 pF (see Note A) 500 S1 Open GND 500 TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open 7V Open LOAD CIRCUIT FOR OUTPUTS 3V Timing Input tw 3V Input 1.5 V 1.5 V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Data Input tsu 1.5 V th 3V 1.5 V 0V 1.5 V 0V Input (see Note B) tPLH Output 3V 1.5 V 1.5 V 0V tPHL VOH 1.5 V 1.5 V VOL tPHL tPLH VOH 1.5 V 1.5 V VOL Output Control tPZL Output Waveform 1 S1 at 7 V (see Note C) Output Waveform 2 S1 at Open (see Note C) tPZH 3V 1.5 V 1.5 V 0V tPLZ 1.5 V tPHZ VOH - 0.3 V VOH 3.5 V VOL + 0.3 V VOL Output 1.5 V [0V VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING NOTES: A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2.5 ns, tf 2.5 ns. C. 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. 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 3-5 SN54ABT16540, SN74ABT16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS208A - FEBRUARY 1991 - REVISED JULY 1994 3-6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 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. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 1998, Texas Instruments Incorporated |
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