74VHCT27AM datasheet(1/7 Pages) STMICROELECTRONICS

Il numero della parte	74VHCT27AM

Spiegazioni elettronici	TRIPLE 3-INPUT NOR GATE

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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74VHCT27A

TRIPLE 3-INPUT NOR GATE

PRELIMINARY DATA

February 2000

PIN CONNECTION AND IEC LOGIC SYMBOLS

s

HIGH SPEED: tPD = 5 ns (TYP.) at VCC =5V

s

LOW POWER DISSIPATION:

ICC =2

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 27

s

IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74VHCT27A is an advanced high-speed

CMOS TRIPLE 3-INPUT NOR GATE fabricated

with sub-micron silicon gate and double-layer

metal wiring C

2MOS technology.

The internal circuit is composed of 3 stages

including buffer output, which provides high noise

immunity and stable output.

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.

®

SOP

TSSOP

ORDER CODES

PACKAGE

T UBE

T & R

SOP

74VHCT27AM

74VHCT27AMTR

TSSOP

74VHCT27ATTR

1/7

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