HCT273 データシートの表示（PDF） - STMicroelectronics

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HCT273

OCTAL D-TYPE FLIP FLOP WITH CLEAR

STMicroelectronics 

®

74VHCT273A

OCTAL D-TYPE FLIP FLOP WITH CLEAR

s HIGH SPEED:

fMAX = 170 MHz (TYP.) at VCC = 5V

s LOW POWER DISSIPATION:

ICC = 4 µA (MAX.) at TA = 25 oC

s COMPATIBLE WITH TTL OUTPUTS:

VIH = 2V (MIN), VIL = 0.8V (MAX)

s POWER DOWN PROTECTION ON INPUTS &

OUTPUTS

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 8 mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s OPERATING VOLTAGE RANGE:

VCC (OPR) = 4.5V to 5.5V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 273

s IMPROVED LATCH-UP IMMUNITY

s LOW NOISE: VOLP = 0.9V (Max.)

DESCRIPTION

The 74VHCT273A is an advanced high-speed

CMOS OCTAL D-TYPE FLIP FLOP WITH

CLEAR fabricated with sub-micron silicon gate

and double-layer metal wiring C2MOS

M

(Micro Package)

T

(TSSOP Package)

ORDER CODES :

74VHCT273AM

74VHCT273AT

technology.

Information signals applied to D inputs are

transfered to the Q outputs on the positive going

edge of the clock pulse.

When the CLEAR input is held low, the Q outputs

are held low independently of the other inputs .

Power down protection is provided on all inputs

and outputs and 0 to 7V can be accepted on

inputs with no regard to the supply voltage. This

device can be used to interface 5V to 3V.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

November 1999

1/9

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