SN54ABT16540_08 Datasheet, PDF (1/7 Pages) Texas Instruments – 16-BIT BUFFERS/DRIBERS WITH 3-STATE OUTPUTS

SN54ABT16540, SN74ABT16540
16ĆBIT BUFFERS/DRIVERS
WITH 3ĆSTATE OUTPUTS
SCBS208A − FEBRUARY 1991 − REVISED JULY 1994
• 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
• High-Drive Outputs (− 32-mA I_OH,
64-mA I_OL )
• 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
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.
SN54ABT16540 . . . WD PACKAGE
SN74ABT16540 . . . 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
GND ¹⁰
1Y7 ¹¹
1Y8 ¹²
2Y1 ¹³
2Y2 ¹⁴
GND ¹⁵
2Y3 ¹⁶
2Y4 ¹⁷
V_CC ¹⁸
2Y5 ¹⁹
2Y6 ²⁰
GND ²¹
2Y7 ²²
2Y8 ²³
2OE1 ²⁴
48 _1OE2
47 _1A1
46 _1A2
45 _GND
44 _1A3
43 _1A4
42 _VCC
41 _1A5
40 _1A6
39 _GND
38 _1A7
37 _1A8
36 _2A1
35 _2A2
34 _GND
33 _2A3
32 _2A4
31 _VCC
30 _2A5
29 _2A6
28 _GND
27 _2A7
26 _2A8
25 _2OE2
To ensure the high-impedance state during power up or power down, OE 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 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 −55°C to 125°C.
The SN74ABT16540 is characterized for operation from − 40°C to 85°C.
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
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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