74HC2G14 查看數據表（PDF） - Philips Electronics

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74HC2G14

Inverting Schmitt-triggers

Philips Electronics 

Philips Semiconductors

Inverting Schmitt-triggers

Preliminary specification

74HC2G14; 74HCT2G14

FEATURES

• Wide supply voltage range from 2.0 to 6.0 V

• High noise immunity

• Low power dissipation

• Balanced propagation delays

• Unlimited input rise and fall times

• Very small 6 pins package.

APPLICATIONS

• Wave and pulse shapers for highly noisy environments

• Astable multivibrators

• Monostable multivibrators

• Output capability: standard.

DESCRIPTION

The 74HC2G/HCT2G14 is a high-speed Si-gate CMOS

device.

The 74HC2G/HCT2G14 provides two inverting buffers

with Schmitt-trigger action. This device is capable of

transforming slowly changing input signals into sharply

defined, jitter-free output signals.

QUICK REFERENCE DATA

GND = 0 V; Tamb = 25 °C; tr = tf ≤ 6.0 ns.

SYMBOL

PARAMETER

CONDITIONS

tPHL/tPLH

CI

CPD

propagation delay nA to nY

input capacitance

power dissipation capacitance

CL = 50 pF; VCC = 4.5 V

notes 1 and 2

Notes

1. CPD is used to determine the dynamic power dissipation (PD in µW).

PD = CPD × VCC2 × fi × N + ∑ (CL × VCC2 × fo) where:

fi = input frequency in MHz; fo = output frequency in MHz;

CL = output load capacitance in pF;

VCC = supply voltage in Volts;

N = total switching outputs;

∑ (CL × VCC2 × fo) = sum of outputs.

2. For HC2G the condition is VI = GND to VCC.

For HCT2G the condition is VI = GND to VCC − 1.5 V.

TYPICAL

HC2G

16

2

10

HCT2G

21

2

10

UNIT

ns

pF

pF

FUNCTION TABLE

See note 1.

INPUTS

nA

L

H

Note

1. H = HIGH voltage level;

L = LOW voltage level.

OUTPUTS

nY

H

L

2003 May 1

2

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