74F2243
器件描述：Quad Bus Transceiver with 25W Series Resistors in the Outputs
器件厂商：FAIRCHILD [Fairchild Semiconductor]
文件大小：31.5KB，共3页
Sponsor by e络盟器件资料摘要：
© 1999 Fairchild Semiconductor Corporation DS009530 www.fairchildsemi.com
October 1988
Revised August 1999
7
4F2243 Q
u
a
d
Bus T
r
ansc
eiver
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
a73 25Ω series resistors in outputs eliminate the need for
external resistors
a73 2-Way asynchronous data bus communication
a73 3-STATE outputs
a73 12 mA source current
a73 Designed to drive the capacitive inputs of MOS devices
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 Number Package Number Package Description
74F2243SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Inputs Inputs/Outputs
E
1
E
2
A
n
B
n
LLIputB = A
LH N/A N/A
HL Z Z
HHA = B Input
Pin Names Description
U.L. Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
E
1
Enable Input (Active LOW) 1.0/1.67 20 µA/−1 mA
E
2
Enable Input (Active HIGH) 1.0/1.67 20 µA/−1 mA
A
n
, B
n
Inputs 3.5/2.67 70 µA/−1.6 mA
Outputs 750/20 −15 mA/12 mA
October 1988
Revised August 1999
7
4F2243 Q
u
a
d
Bus T
r
ansc
eiver
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
a73 25Ω series resistors in outputs eliminate the need for
external resistors
a73 2-Way asynchronous data bus communication
a73 3-STATE outputs
a73 12 mA source current
a73 Designed to drive the capacitive inputs of MOS devices
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 Number Package Number Package Description
74F2243SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Inputs Inputs/Outputs
E
1
E
2
A
n
B
n
LLIputB = A
LH N/A N/A
HL Z Z
HHA = B Input
Pin Names Description
U.L. Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
E
1
Enable Input (Active LOW) 1.0/1.67 20 µA/−1 mA
E
2
Enable Input (Active HIGH) 1.0/1.67 20 µA/−1 mA
A
n
, B
n
Inputs 3.5/2.67 70 µA/−1.6 mA
Outputs 750/20 −15 mA/12 mA