TC74AC161F Ver la hoja de datos (PDF) - Toshiba

Número de pieza

componentes Descripción

Fabricante

TC74AC161F

CMOS Digital Integrated Circuit Silicon Monolithic

Toshiba 

Pin Assignment

TC74AC161,163P/F/FT

CLR 1

CK 2

A3

B4

C5

D6

ENP 7

GND 8

(top view)

IEC Logic Symbol

16 VCC

15 Carry Output

14 QA

13 QB

12 QC

11 QD

10 ENT

9 LOAD

CLR (1)

LOAD (9)

ENT (10)

ENP (7)

CK (2)

TC74AC161

CTRDIV 16

CT = 0

M1

M2

G3 3CT = 15

G4

C5/2, 3, 4+

A (3) 1, 5D (1)

B (4)

(2)

C (5)

(4)

D (6)

(8)

(15) Carry Output

(14) QA

(13) QB

(12) QC

(11) QD

CLR

(1)

LOAD (9)

ENT (10)

ENP (7)

CK (2)

TC74AC163

CTRDIV 16

5CT = 0

M1

M2

G3 3CT = 15

G4

C5/2, 3, 4+

A (3) 1, 5D (1)

B (4)

(2)

C (5)

(4)

D (6)

(8)

(15) Carry Output

(14) QA

(13) QB

(12) QC

(11) QD

Truth Table (Note)

Inputs

CLR

(161)

CLR

(163)

LOAD

ENP

ENT

CK

(161)

CK

(163)

QA

L

L

X

X

X

X

L

H

H

L

X

X

A

H

H

H

X

L

H

H

H

L

X

H

H

H

H

H

H

X

X

X

X

Outputs

QB QC

L

L

B

C

No Change

No Change

Count Up

No Change

Function

QD

L Reset to “0”

D Preset Data

No Count

No Count

Count

No Count

Note:

X: Don’t care

A, B, C, D: Logic level of data inputs

Carry: Carry = ENT·QA·QB·QC·QD

2

2012-02-29

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