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74F243 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 74F243
Description  Quad Bus Transceiver with 3-STATE Outputs
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74F243 Datasheet(HTML) 1 Page - Fairchild Semiconductor

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© 1999 Fairchild Semiconductor Corporation
DS009502
www.fairchildsemi.com
April 1988
Revised July 1999
74F243
Quad Bus Transceiver with 3-STATE Outputs
General Description
The 74F243 is a quad bus transmitter/receiver designed for
4-line asynchronous 2-way data communications between
data busses.
Features
s 2-Way asynchronous data bus communication
s Input clamp diodes limit high-speed termination effects
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
Truth Table
H
= HIGH Voltage Level
Z
= High Impedance
L
= LOW Voltage Level
N/A
= Not Allowed
Unit Loading/Fan Out
Order Code
Package Number
Package Description
74F243SC
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Inputs
Inputs/Outputs
E1
E2
An
Bn
L
L
Input
B
= A
LH
N/A
N/A
HL
Z
Z
HH
A
= B
Input
Pin
Description
U.L.
Input IIH/IIL
Names
HIGH/LOW Output IOH/IOL
E1
Enable Input (Active LOW)
1.0/1.67
20
µA/−1 mA
E2
Enable Input (Active HIGH)
1.0/1.67
20
µA/−1 mA
An, Bn Inputs
3.5/2.67
70
µA/−1.6 mA
Outputs
600/106.6
(80)
−12 mA/64 mA
(48 mA)


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