SN54ABT16245 Datasheet, PDF (1/10 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SN54ABT16245, SN74ABT16245
16ĆBIT BUS TRANSCEIVERS
WITH 3ĆSTATE OUTPUTS
SCBS084B − D3712, JANUARY 1991 − REVISED DECEMBER 1992
• 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 )
• Packaged in Plastic 300-mil Shrink
Small-Outline and Thin Shrink
Small-Outline Packages and 380-mil
Fine-Pitch Ceramic Flat Packages Using
25-mil Center-to-Center Spacings
description
The ′ABT16245 is a 16-bit (dual-octal)
noninverting 3-state transceiver designed for
synchronous two-way communication between
data buses. The control function implementation
minimizes external timing requirements.
SN54ABT16245 . . . WD PACKAGE
SN74ABT16245 . . . DGG OR DL PACKAGE
(TOP VIEW)
1DIR 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V_CC 7
1B5 8
1B6 9
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
V_CC 18
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2DIR 24
48 1OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V_CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OE
This device can be used as two 8-bit transceivers
or one 16-bit transceiver. It allows data
transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the
direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses
are effectively isolated.
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 SN74ABT16245 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 SN54ABT16245 is characterized for operation over the full military temperature range of −55°C to 125°C.
The SN74ABT16245 is characterized for operation from − 40°C to 85°C.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
Widebus and EPIC-ΙΙB are trademarks of Texas Instruments Incorporated.
PRODUCTION DATA information is 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  1992, Texas Instruments Incorporated
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