M54HCT27 Datasheet, PDF (1/9 Pages) STMicroelectronics – TRIPLE 3-INPUT NOR GATE

M54HCT27
M74HCT27
. HIGH SPEED
tPD = 9 ns (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
I_CC = 1 µA (MAX.) AT T_A = 25 °C
. COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
t_PLH = t_PHL
. PIN AND FUNCTION COMPATIBLE WITH
54/74LS27
DESCRIPTION
The M54/74HCT27 is a high speed CMOS TRIPLE
3-INPUT NOR GATE fabricated in silicon gate
C²MOS technology.
It has the same high speed performance 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. This integrated circuit has input and
output characteristics that are fully compatible with
54/74 LSTTL logic families. M54/74HCT devices
are designed to directly interface HSC²MOS sys-
tems with TTL and NMOS components. They are
also plug in replacements for LSTTL devices giving
a reduction of power consumption.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRIPLE 3-INPUT NOR GATE
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCT27F1R
M74HCT27M1R
M74HCT27B1R
M 74H CT 2 7C 1R
PIN CONNECTIONS (top view)
February 1993
NC =
No Internal
Connection
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