SN54BCT25244_08 Datasheet, PDF (1/12 Pages) Texas Instruments – 25-W OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

• State-of-the-Art BiCMOS Design
Significantly Reduces I_CCZ
• ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015; Exceeds
200 V Using Machine Model (C = 200 pF,
R = 0)
• Designed to Facilitate Incident-Wave
Switching for Line Impedances of 25 Ω
or Greater
• Distributed V_CC and GND Pins Minimize
Noise Generated by the Simultaneous
Switching of Outputs
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil DIPs
(JT, NT)
description
These 25-Ω octal buffers and line drivers are
designed specifically to improve both the
performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented
receivers and transmitters.
These buffers are capable of sinking 188-mA I_OL,
which facilitates switching 25-Ω transmission
lines on the incident wave. The distributed V_CC
and GND pins minimize switching noise for more
reliable system operation.
When the output-enable (1OE and 2OE) inputs
are low, the device transmits data from the
A inputs to the Y outputs. When 1OE and 2OE are
high, the outputs are in the high-impedance state.
The SN54BCT25244 is characterized for
operation over the full military temperature range
of – 55°C to 125°C. The SN74BCT25244 is
characterized for operation from 0°C to 70°C.
SN54BCT25244, SN74BCT25244
25-Ω OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993
SN54BCT25244 . . . JT OR W PACKAGE
SN74BCT25244 . . . DW OR NT PACKAGE
(TOP VIEW)
1Y1 1
GND 2
1Y2 3
1Y3 4
GND 5
1Y4 6
2Y1 7
GND 8
2Y2 9
2Y3 10
GND 11
2Y4 12
24 1OE
23 1A1
22 1A2
21 V_CC
20 1A3
19 1A4
18 2A1
17 2A2
16 V_CC
15 2A3
14 2A4
13 2OE
SN54BCT25244 . . . FK PACKAGE
(TOP VIEW)
1A3
V_CC
1A2
NC
1A1
1OE
1Y1
4 3 2 1 28 27 26
5
25
6
24
7
23
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
2OE
2Y4
GND
NC
2Y3
2Y2
GND
NC – No internal connection
FUNCTION TABLE
(each buffer/driver)
INPUTS
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1993, Texas Instruments Incorporated
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