Fairchild Semiconductor 74F2244SCX, 74F2244SC, 74F2244PC, 74F2244MSAX, 74F2244MSA Datasheet
October 1988
Revised March 1999
74F2244 Octal Buffer/Line Driver with 25Ω Series Resistors in Outputs
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74F2244
Octal Buffer/Line Driver
with 25Ω Series Resistors in Outputs
General Description
The F2244 is an o ctal buffer/line driver designed to drive
the capacitive inputs of MOS memory drivers, address drivers, clock drivers and bus-oriented transmitters/receivers.
The 25Ω series resist ors i n the outputs reduc e rin ging a nd
eliminate the need for external resistors.
Features
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ 12 mA source current
■ 25Ω series resistors in outputs eliminate the need for
external resistors.
■ Designed to drive the capacitive inputs of MOS devices
■ Guarante ed 4000V minimum ESD protection
Ordering Code:
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering cod e.
Connection Diagram Logic Symbol
IEEE/IEC
Order Number Package Number Package Description
74F2244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F2244MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74F2244PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
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74F2244
Unit Loading/Fan Out
Note 1: Worst-case F2244 disabled
Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Pin Names Description
U.L. Input I
IH/IIL
HIGH/LOW Output IOH/I
OL
OE1, OE23-STATE Output Enable Input (Active LOW) 1.0/1.667 20 µA/−1 mA
OE
2
3-STATE Output Enable Input (Active HIGH) 1.0/1.667 20 µA/−1 mA
I
an
, I
bn
Inputs 1.0/2.667 (Note 1) 20 µA/−1.6 mA
O
an,Obn
Outputs 750/20 −15 mA/12 mA
OE
1
I
an
O
an
OE
2
I
bn
O
bn
HXZHXZ
LHHLHH
LLLLLL
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