參數(shù)資料
型號: SN54ABTH25245FK
廠商: Texas Instruments, Inc.
英文描述: 25-W OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
中文描述: 25鎢3八路總線收發(fā)器態(tài)輸出
文件頁數(shù): 1/8頁
文件大?。?/td> 130K
代理商: SN54ABTH25245FK
SN54ABTH25245, SN74ABTH25245
25-
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS251F – JUNE 1992 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art EPIC-
ΙΙ
B
BiCMOS Design
Significantly Reduces Power Dissipation
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
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
High-Impedance State During Power Up
and Power Down
Designed to Facilitate Incident-Wave
Switching for Line Impedances of 25
or
Greater
Distributed V
CC
and GND Pin Configuration
Minimizes High-Speed Switching Noise
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
Package Options Include Plastic
Small-Outline (DW) Package, Ceramic Chip
Carriers (FK), and Standard Plastic (NT)
and Ceramic (JT) DIPs
description
The ’ABTH25245 are 25-
octal bus transceivers
designed for asynchronous communication
between data buses. They improve both the
performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented
transceivers.
These
transmission from the A bus to the B bus or from
the B bus to the A bus, depending on the logic level
at the direction-control (DIR) input. The
output-enable (OE) input can disable the device
so that both buses are effectively isolated. When
OE is low, the device is active.
devices
allow
noninverted
data
These transceivers are capable of sinking 188 mA of I
OL
current, which facilitates switching 25-
transmission
lines on the incident wave. The distributed V
CC
and GND pins minimize switching noise for more-reliable system
operation.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
Copyright
1997, 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.
parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC-
ΙΙ
B is a trademark of Texas Instruments Incorporated.
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24
23
22
21
20
19
18
17
16
15
14
13
A1
GND
A2
A3
GND
A4
A5
GND
A6
A7
GND
A8
DIR
B1
B2
V
CC
B3
B4
B5
B6
V
CC
B7
B8
OE
SN54ABTH25245 . . . JT PACKAGE
SN74ABTH25245 . . . DW OR NT PACKAGE
(TOP VIEW)
3
2 1 28 27
12 13
5
6
7
8
9
10
11
25
24
23
22
21
20
19
OE
A8
GND
NC
A7
A6
GND
B3
V
CC
B2
NC
B1
DIR
A1
4
26
14 15 16 17 18
G
A
A
N
G
A
A
B
B
B
N
V
B
B
SN54ABTH25245 . . . FK PACKAGE
(TOP VIEW)
C
NC – No internal connection
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