74F2243 Datasheet, PDF (1/3 Pages) Fairchild Semiconductor – Quad Bus Transceiver with 25W Series Resistors in the Outputs

October 1988
Revised August 1999
74F2243
Quad Bus Transceiver
with 25Ω Series Resistors in the Outputs
General Description
The 74F2243 is a quad bus transmitter/receiver which can
be used for 4-line asynchronous 2-way data communica-
tions between data busses. It is designed to drive the
capacitive inputs of MOS memory drivers, address drivers,
clock drivers, and bus-oriented transmitters/receivers.
The 25Ω series resistors in the outputs reduce ringing and
eliminate the need for external resistors.
Features
s 25Ω series resistors in outputs eliminate the need for
external resistors
s 2-Way asynchronous data bus communication
s 3-STATE outputs
s 12 mA source current
s Designed to drive the capacitive inputs of MOS devices
Ordering Code:
Order Number Package Number
Package Description
74F2243SC
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
IEEE/IEC
Truth Table
Inputs
E₁
E₂
L
L
L
H
H
L
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
Inputs/Outputs
A_n
B_n
Input
B=A
N/A
N/A
Z
Z
A=B
Input
Z = High Impedance
N/A = Not Allowed
Unit Loading/Fan Out
Pin Names
Description
E₁
E₂
A_n, B_n
Enable Input (Active LOW)
Enable Input (Active HIGH)
Inputs
Outputs
U.L.
HIGH/LOW
1.0/1.67
1.0/1.67
3.5/2.67
750/20
Input I_IH/I_IL
Output I_OH/I_OL
20 µA/−1 mA
20 µA/−1 mA
70 µA/−1.6 mA
−15 mA/12 mA
© 1999 Fairchild Semiconductor Corporation DS009530
www.fairchildsemi.com