74AHC123APW 查看數據表（PDF） - Philips Electronics

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74AHC123APW

Dual retriggerable monostable multivibrator with reset

Philips Electronics 

Philips Semiconductors

Dual retriggerable monostable multivibrator

with reset

Product specification

74AHC123A;

74AHCT123A

Type 74AHCT123A

GND = 0 V; tr = tf ≤ 3.0 ns.

SYMBOL PARAMETER

TEST CONDITIONS

WAVEFORMS

CL

Tamb (°C)

25

−40 to +85 −40 to +125 UNIT

MIN. TYP. MAX. MIN. MAX. MIN. MAX.

VCC = 4.5 to 5.5 V; note 1

tPHL/tPLH

propagation delay; CEXT = 0 pF;

nA, nB to nQ, nQ REXT = 5 kΩ; see

Figs 7 and 11

15 pF −

propagation delay; CEXT = 0 pF;

−

nRD to nQ, nQ

REXT = 5 kΩ; see

Figs 7 and 11

propagation delay; CEXT = 0 pF;

−

nRD to nQ, nQ

REXT = 5 kΩ; see

(reset)

Figs 7 and 11

propagation delay; CEXT = 0 pF;

nA, nB to nQ, nQ REXT = 5 kΩ; see

Figs 7 and 11

50 pF −

propagation delay; CEXT = 0 pF;

−

nRD to nQ, nQ

REXT = 5 kΩ; see

Figs 7 and 11

propagation delay; CEXT = 0 pF;

−

nRD to nQ, nQ

REXT = 5 kΩ; see

(reset)

Figs 7 and 11

tW

trigger pulse

see Fig 8

width; nA = LOW

50 pF 5.0

trigger pulse

see Fig 8

5.0

width; nB = HIGH

reset pulse width; see Fig 9

5.0

nRD = LOW

output pulse width; CEXT = 28 pF;

−

nQ = HIGH;

REXT = 2 kΩ; note 2;

nQ = LOW

see Figs 8, 9 and 10

CEXT = 0.01 µF;

90

REXT = 10 kΩ;

note 2; see

Figs 8, 9 and 10

CEXT = 0.1 µF;

0.9

REXT = 10 kΩ;

note 2; see

Figs 8, 9 and 10

5.0 12 1.0

5.2 12.9 1.0

4.7 9.4 1.0

7.1 14 1.0

7.5 14.9 1.0

6.7 11.4 1.0

−−

5.0

−−

5.0

−−

5.0

100 200 −

100 110 90

1 1.1 0.9

14 1.0 15.5 ns

15.0 1.0 16.5 ns

11 1.0 12.0 ns

16 1.0 17.5 ns

17.0 1.0 18.5 ns

13 1.0 14.5 ns

−

5.0 −

ns

−

5.0 −

ns

−

5.0 −

ns

240 −

240 ns

110 85 115 µs

1.1 0.85 1.15 ms

2000 Mar 15

15

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