SN74BCT25240 Datasheet, PDF (1/6 Pages) Texas Instruments – 25-Ω OCTAL BUFFER/DRIVER 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 and Standard
Plastic 300-mil DIPs (NT)
SN74BCT25240
25ĆΩ OCTAL BUFFER/DRIVER
WITH 3ĆSTATE OUTPUTS
SCBS101B − JUNE 1990 − REVISED NOVEMBER 1993
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
description
This 25-Ω octal buffers and line driver is designed specifically to improve both the performance and density of
3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
The SN74BCT25240 is 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 the inverted A-input data to the
Y outputs. When 1OE and 2OE are high, the outputs are in the high-impedance state. 1OE affects only the 1Y
outputs; 2OE affects only the 2Y outputs.
The SN74BCT25240 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each buffer/driver)
INPUTS
OE
A
OUTPUT
Y
L
H
L
L
L
H
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.
Copyright  1993, Texas Instruments Incorporated
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