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SN74BCT25240 Datasheet

25-Ohm Octal Buffer/Driver

No Preview Available !

State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
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
or Greater
Distributed VCC 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
25ĆOCTAL BUFFER/DRIVER
WITH 3ĆSTATE OUTPUTS
SCBS101B − JUNE 1990 − REVISED NOVEMBER 1993
DW OR NT PACKAGE
(TOP VIEW)
1Y1
GND
1Y2
1Y3
GND
1Y4
2Y1
GND
2Y2
2Y3
GND
2Y4
1
2
3
4
5
6
7
8
9
10
11
12
24 1OE
23 1A1
22 1A2
21 VCC
20 1A3
19 1A4
18 2A1
17 2A2
16 VCC
15 2A3
14 2A4
13 2OE
description
This 25-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 IOL, which facilitates switching 25-transmission lines on
the incident wave. The distributed VCC 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
LH
L
LL
H
HX
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
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
2−1


Texas Instruments (TI) Electronic Components Datasheet

SN74BCT25240 Datasheet

25-Ohm Octal Buffer/Driver

No Preview Available !

SN74BCT25240
25ĆOCTAL BUFFER/DRIVER
WITH 3ĆSTATE OUTPUTS
SCBS101B − JUNE 1990 − REVISED NOVEMBER 1993
logic symbol
logic diagram (positive logic)
24
1OE
EN
24
1OE
23
1A1
22
1A2
20
1A3
19
1A4
1
1
1Y1
3
1Y2
4
1Y3
6
1Y4
13
2OE
EN
18
2A1
1
7
2Y1
17 9
2A2 2Y2
15 10
2A3 2Y3
14 12
2A4 2Y4
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
23
1A1
1A2 22
20
1A3
19
1A4
13
2OE
18
2A1
17
2A2
1
1Y1
3 1Y2
4
1Y3
6
1Y4
7
2Y1
9 2Y2
15
2A3
10
2Y3
14
2A4
12 2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Voltage applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 5.5 V
Voltage applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA
Current into any output in the low state, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376 mA
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The input negative-voltage rating may be exceeded if the input clamp-current rating is observed.
2−2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443


Part Number SN74BCT25240
Description 25-Ohm Octal Buffer/Driver
Maker Texas
Total Page 6 Pages
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