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铮OH铮?/div>
= I
OL
= 4 mA (MIN.)
BALANCED PROPAGATION DELAYS
t
PLH
= t
PHL
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO 6 V
PIN AND FUNCTION COMPATIBLE WITH
54/74LS20
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HC20F1R
M74HC20M1R
M74HC20B1R
M74HC20C1R
PIN CONNECTIONS
(top view)
DESCRIPTION
The M54/74HC20 is a high speed CMOS DUAL 4-
INPUT NAND GATE fabricated in silicon gate
2
C MOS technology. It has the same high speed per-
formance of LSTTL combined with true CMOS low
power consumption.
The internal circuit is composed of 3 stages includ-
ing buffered output, which gives high noise immunity
and a stable output. All inputs are equipped with pro-
tection circuits against static discharge and transient
excess voltage.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
NC =
No Internal
Connection
December 1992
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