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PDF DM74LS243 Data sheet ( Hoja de datos )
| Número de pieza | DM74LS243 | |
| Descripción | Quadruple Bus Transceiver | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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August 1986
Revised January 2000
DM74LS243
Quadruple Bus Transceiver
General Description
This four data line transceiver is designed for asynchro-
nous two-way communications between data buses. It can
be used to drive terminated lines down to 133Ω.
Features
s Two-way asynchronous communication between data
buses
s PNP inputs reduce DC loading on bus line
s Hysteresis at data inputs improves noise margin
Ordering Code:
Order Number Package Number
Package Description
DM74LS243M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS243N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
Control
Data Port
Inputs
Status
G AB
GBA
A
B
H H OI
L H (Note 1) (Note 1)
HL
ISOLATED
L L IO
I = Input
O = Output
H = HIGH Logic Level
L = LOW Logic Level
Note 1: Possibly destructive oscillation may occur if the transceivers are
enabled in both directions at once.
© 2000 Fairchild Semiconductor Corporation DS006412
www.fairchildsemi.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N14A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
5 www.fairchildsemi.com
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| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet DM74LS243.PDF ] | |
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