74AHC123A View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

74AHC123A

Dual retriggerable monostable multivibrator with reset

NXP Semiconductors. 

NXP Semiconductors

74AHC123A; 74AHCT123A

Dual retriggerable monostable multivibrator with reset

Table 7. Dynamic characteristics …continued

GND = 0 V; For test circuit see Figure 12.

Symbol Parameter Conditions

25 °C

−40 °C to +85 °C −40 °C to +125 °C Unit

Min Typ[1] Max Min

Max

Min

Max

74AHCT123A

tpd

propagation nA and nB to nQ and nQ; [2]

delay

see Figure 7

VCC = 4.5 V to 5.5 V

CL = 15 pF

CL = 50 pF

nRD to nQ and nQ;

see Figure 7

-

5.0 12.0 1.0

14.0

1.0

15.5 ns

-

7.1 14.0 1.0

16.0

1.0

17.5 ns

[2]

VCC = 4.5 V to 5.5 V

CL = 15 pF

-

5.2 12.9 1.0

15.0

1.0

16.5 ns

CL = 50 pF

-

7.5 14.9 1.0

17.0

1.0

18.5 ns

nRD to nQ and nQ (reset); [2]

see Figure 7

VCC = 4.5 V to 5.5 V

CL = 15 pF

-

4.7 9.4 1.0

11.0

1.0

12.0 ns

CL = 50 pF

-

6.7 11.4 1.0

13.0

1.0

14.5 ns

tW

pulse width inputs; nA = LOW;

CL = 50 pF; see Figure 7

VCC = 4.5 V to 5.5 V

5.0 -

- 5.0

-

5.0

-

ns

inputs; nB = HIGH;

CL = 50 pF; see Figure 7

VCC = 4.5 V to 5.5 V

5.0 -

- 5.0

-

5.0

-

ns

inputs; nRD = LOW;

CL = 50 pF; see Figure 7

VCC = 4.5 V to 5.5 V

5.0 -

- 5.0

-

5.0

-

ns

outputs; nQ = LOW and

[3]

nQ = HIGH; CL = 50 pF;

CEXT = 28 pF; REXT = 2 kΩ;

see Figure 7, Figure 8,

Figure 9 and Figure 10

VCC = 4.5 V to 5.5 V

CEXT = 0.01 µF;

REXT = 10 kΩ

VCC = 4.5 V to 5.5 V

CEXT = 0.1 µF;

REXT = 10 kΩ

VCC = 4.5 V to 5.5 V

- 100 200 -

240

-

240 ns

90 100 110 90

110

85

115 µs

0.9 1 1.1 0.9

1.1

0.85

1.15 ms

74AHC_AHCT123A_2

Product data sheet

Rev. 02 — 18 January 2008

© NXP B.V. 2008. All rights reserved.

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