74FR244 Octal Buffer/Line Driver with 3-STATE Outputs
December 1990
Revised May 2001
74FR244
Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The 74FR244 is a non-inverting octal buffer and line driver
designed to be employed as memory and address driver,
clock driver and bus-oriented transmitter/receiver.
Features
s
3-STATE outputs drive bus lines or buffer memory
address registers
s
Outputs sink 64 mA and source 15 mA
s
Guaranteed pin-to-pin skew
Ordering Code:
Order Number
74FR244SC
74FR244SJ
74FR244PC
Package Number
M20B
M20D
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-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 鈥淴鈥?to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
OE
1
,鈥揙E
2
I
0
鈥揑
7
O
0
鈥揙
7
Description
Output Enable Input (Active-LOW)
Inputs
Outputs
Truth Tables
Inputs
OE
1
L
L
H
Inputs
OE
2
L
L
H
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Z
=
High Impedance
Outputs
I
n
L
H
X
(Pins 12, 14, 16, 18)
L
H
Z
Outputs
I
n
L
H
X
(Pins 3, 5, 7, 9)
L
H
Z
漏 2001 Fairchild Semiconductor Corporation
DS010900
www.fairchildsemi.com