74ABT374A データシートの表示（PDF） - NXP Semiconductors.

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74ABT374A

Octal D-type flip-flop; positive-edge trigger; 3-state

NXP Semiconductors. 

NXP Semiconductors

74ABT374A

Octal D-type flip-flop; positive-edge trigger; 3-state

5. Pinning information

5.1 Pinning

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2( 

4 

' 

' 

4 

4 

' 

' 

4 

*1' 

 9&&

 4

 '

 '

 4

 4

 '

 '

 4

 &3

DDD

Fig 4. Pin configuration for DIP20 and SO20

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2( 

4 

' 

' 

4 

4 

' 

' 

4 

*1' 

 9&&

 4

 '

 '

 4

 4

 '

 '

 4

 &3

DDD

Fig 5. Pin configuration for SSOP20 and TSSOP20

5.2 Pin description

Table 2. Pin description

Symbol

OE

D0, D1, D2, D3, D4, D5, D6, D7

GND

CP

Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7

VCC

Pin

1

3, 4, 7, 8, 13, 14, 17, 18

10

11

2, 5, 6, 9, 12, 15, 16, 19

20

6. Functional description

Description

3-state output enable input (active LOW)

data input

ground (0 V)

clock pulse input (active rising edge)

3-state flip-flop output

supply voltage

Table 3. Function table[1]

Operating mode

Input

OE

CP

Dn

Load and read register

L



l

L



h

Load register and disable output

H



l

H



h

[1] H = HIGH voltage level

h = HIGH voltage level one setup time prior to the LOW-to-HIGH CP transition

L = LOW voltage level

l = LOW voltage level one setup time prior to the LOW-to-HIGH CP transition

Z = high-impedance OFF-state

 = LOW-to-HIGH clock transition

Internal

flip-flop

L

H

L

H

Output

Qn

L

H

Z

Z

74ABT374A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 2 — 18 December 2012

© NXP B.V. 2012. All rights reserved.

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