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MM74HC244 Octal 3-STATE Buffer
September 1983
Revised May 2005
MM74HC244
Octal 3-STATE Buffer
General Description
The MM74HC244 is a non-inverting buffer and has two
active low enables (1G and 2G); each enable indepen-
dently controls 4 buffers. This device does not have
Schmitt trigger inputs.
These 3-STATE buffers utilize advanced silicon-gate
CMOS technology and are general purpose high speed
non-inverting buffers. They possess high drive current out-
puts which enable high speed operation even when driving
large bus capacitances. These circuits achieve speeds
comparable to low power Schottky devices, while retaining
the advantage of CMOS circuitry, i.e., high noise immunity,
and low power consumption. All three devices have a
fanout of 15 LS-TTL equivalent inputs.
All inputs are protected from damage due to static dis-
charge by diodes to V
CC
and ground.
Features
s
Typical propagation delay: 14 ns
s
3-STATE outputs for connection to system buses
s
Wide power supply range: 2–6V
s
Low quiescent supply current: 80
P
A
s
Output current: 6 mA
Ordering Code:
Order Number
MM74HC244WM
MM74HC244SJ
MM74HC244MTC
MM74HC244N
Package Number
M20B
M20D
MTC20
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
京公网安备 11010802033920号
EEWORLD
