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производитель

74AHCT123AD

Dual retriggerable monostable multivibrator with reset

Philips Electronics 

Philips Semiconductors

Dual retriggerable monostable multivibrator

with reset

Product specification

74AHC123A;

74AHCT123A

AC CHARACTERISTICS

Type 74AHC123A

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 = 3.0 to 3.6 V; note 1

tPHL/tPLH

propagation delay; CEXT = 0 pF;

nA, nB to nQ, nQ REXT = 5 kΩ;

see Figs 7 and 11

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;

(reset)

see Figs 7 and 11

propagation delay; CEXT = 0 pF;

nA, nB to nQ , nQ REXT = 5 kΩ;

see Figs 7 and 11

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;

(reset)

see Figs 7 and 11

tW

trigger pulse

see Fig 8

width; nA = LOW

trigger pulse

see Fig 8

width; nB = HIGH

reset pulse width;

nRD = LOW

output pulse

width; nQ = HIGH;

nQ = LOW

see Fig 9

CEXT = 28 pF;

REXT = 2 kΩ;

note 3; see Figs 8,

9 and 10

CEXT = 0.01 µF;

REXT = 10 kΩ;

note 3; see Figs 8,

9 and 10

CEXT = 0.1 µF;

REXT = 10 kΩ;

note 3; see Figs 8,

9 and 10

15 pF −

−

−

50 pF −

−

−

5.0

5.0

5.0

−

90

0.9

7.4 20.6 1.0

8.2 22.4 1.0

6.4 15.8 1.0

10.5 24.1 1.0

11.7 25.9 1.0

9.2 19.3 1.0

−−

5.0

−−

5.0

−−

5.0

115 240 −

100 110 90

1 1.1 0.9

24.0 1.0 26.0 ns

26.0 1.0 26.0 ns

18.5 1.0 20.0 ns

27.5 1.0 30.0 ns

29.5 1.0 32.0 ns

22.0 1.0 24.5 ns

−

5.0 −

ns

−

5.0 −

ns

−

5.0 −

ns

300 −

300 ns

110 85 115 µs

1.1 0.85 1.15 ms

2000 Mar 15

12

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