SN54ABT162827 Datasheet, PDF (1/10 Pages) Texas Instruments – 20-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

• Output Ports Have Equivalent 25-Ω Series
Resistors, So No External Resistors Are
Required
• 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 V_OLP (Output Ground Bounce)
< 1 V at V_CC = 5 V, T_A = 25°C
• Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
• Flow-Through Architecture Optimizes
PCB Layout
• 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
description
The ′ABT162827 are noninverting 20-bit buffers
composed of two 10-bit buffers with separate
output-enable signals. For either 10-bit buffer, the
two output-enable (1OE1 and 1OE2 or 2OE1 and
2OE2) inputs must both be low for the
corresponding Y outputs to be active. If either
output-enable input is high, the outputs of that
10-bit buffer are in the high-impedance state.
SN54ABT162827, SN74ABT162827
20ĆBIT BUFFERS/DRIVERS
WITH 3ĆSTATE OUTPUTS
SCBS248B − JULY 1993 − REVISED DECEMBER 1994
SN54ABT162827 . . . WD PACKAGE
SN74ABT162827 . . . DGG OR DL PACKAGE
(TOP VIEW)
1OE1 1
1Y1 2
1Y2 3
GND 4
1Y3 5
1Y4 6
V_CC 7
1Y5 8
1Y6 9
1Y7 10
GND 11
1Y8 12
1Y9 13
1Y10 14
2Y1 15
2Y2 16
2Y3 17
GND 18
2Y4 19
2Y5 20
2Y6 21
V_CC 22
2Y7 23
2Y8 24
GND 25
2Y9 26
2Y10 27
2OE1 28
56 1OE2
55 1A1
54 1A2
53 GND
52 1A3
51 A14
50 V_CC
49 1A5
48 1A6
47 1A7
46 GND
45 1A8
44 1A9
43 1A10
42 2A1
41 2A2
40 2A3
39 GND
38 2A4
37 2A5
36 2A6
35 V_CC
34 2A7
33 2A8
32 GND
31 2A9
30 2A10
29 2OE2
The outputs, which are designed to source or sink
up to 12 mA, include 25-Ω series resistors to
reduce overshoot and undershoot.
To ensure the high-impedance state during power up or power down, OE inputs should be tied to V_CC through
a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN74ABT162827 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 SN54ABT162827 is characterized for operation over the full military temperature range of −55°C to 125°C.
The SN74ABT162827 is characterized for operation from − 40°C to 85°C.
Widebus and EPIC-ΙΙB 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.
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Copyright  1994, Texas Instruments Incorporated
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