M54HCT273 Datasheet, PDF (1/10 Pages) STMicroelectronics – OCTAL D TYPE FLIP FLOP WITH CLEAR

M54HCT273
M74HCT273
OCTAL D TYPE FLIP FLOP WITH CLEAR
. HIGH SPEED
fMAX = 80 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
I_CC = 4 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
54/74LS273
B1R
(Plastic Package)
M 1R
(Micro Package)
F1R
(Ceramic Package)
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HCT273 is a high speed CMOS OCTAL
D-TYPE FLIP FLOP WITH CLEAR fabricated in sili-
con gate C²MOS technology. It has the same high
speed performance of LSTTL combined with true
CMOS low power consumption. Information signals
applied to D inputs are transferred to the Q outputs
on the positive-going edge of the clock pulse.
When the CLEAR input is held low, the Q output are
in the low logic level independent of the other inputs.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age. This integrated circuit has input and output
characteristics that are fully compatible with 54/74
LSTTL logic families. M54/74HCT devices are de-
signed to directly interface HSC²MOS systems with
TTL and NMOS components. They are also plug in
replacements for LSTTL devices giving a reduction
of power consumption. All inputs are equipped with
protection circuits against static discharge and tran-
sient excess voltage.
ORDER CODES :
M54HCT273F1R M74HCT273M1R
M74HCT273B1R M74HCT273C1R
PIN CONNECTIONS (top view)
INPUT AND OUTPUT EQUIVALENT CIRCUIT
February 1993
NC =
No Internal
Connection
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