74VHC14 데이터 시트보기 (PDF) - STMicroelectronics

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74VHC14

HEX SCHMITT INVERTER

STMicroelectronics 

74VHC14

HEX SCHMITT INVERTER

s HIGH SPEED: tPD = 5.5ns (TYP.) at VCC = 5V

s LOW POWER DISSIPATION:

ICC = 2 µA (MAX.) at TA=25°C

s TYPICAL HYSTERESIS: Vh = 1V

at VCC = 4.5V

s POWER DOWN PROTECTION ON INPUTS

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 8 mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s OPERATING VOLTAGE RANGE:

VCC(OPR) = 2V to 5.5V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 14

s IMPROVED LATCH-UP IMMUNITY

s LOW NOISE: VOLP = 0.8V (MAX.)

DESCRIPTION

The 74VHC14 is an advanced high-speed CMOS

HEX SCHMITT INVERTER fabricated with

sub-micron silicon gate and double-layer metal

wiring C2MOS technology.

The internal circuit is composed of 3 stages

including buffer output, which enables high noise

immunity and stable output.

Power down protection is provided on all inputs

and 0 to 7V can be accepted on inputs with no

SOP

TSSOP

Table 1: Order Codes

PACKAGE

SOP

TSSOP

T&R

74VHC14MTR

74VHC14TTR

regard to the supply voltage. This device can be

used to interface 5V to 3V.

Pin configuration and function are the same as

those of the 74VHC04 but the 74VHC14 has

hysteresis.

This together with its schmitt trigger function

allows it to be used on line receivers with slow

rise/fall input signals.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

Figure 1: Pin Connection And IEC Logic Symbols

November 2004

Rev. 6

1/11

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