MOTOROLA CMOS LOGIC DATA

87

MC14020B

14-Bit Binary Counter

The MC14020B 14–stage binary counter is constructed with MOS

P–channel and N–channel enhancement mode devices in a single

monolithic structure. This part is designed with an input wave shaping circuit

and 14 stages of ripple–carry binary counter. The device advances the count

on the negative–going edge of the clock pulse. Applications include time

delay circuits, counter controls, and frequency–dividing circuits.

• Fully Static Operation

• Diode Protection on All Inputs

• Supply Voltage Range = 3.0 Vdc to 18 Vdc

• Capable of Driving Two Low–power TTL Loads or One Low–power

Schottky TTL Load Over the Rated Temperature Range

• Buffered Outputs Available from stages 1 and 4 thru 14

• Common Reset Line

• Pin–for–Pin Replacement for CD4020B

Symbol

Parameter

Value

Unit

VDD

DC Supply Voltage

– 0.5 to + 18.0

V

Vin, Vout Input or Output Voltage (DC or Transient)

– 0.5 to VDD + 0.5

V

lin, lout

Input or Output Current (DC or Transient),

per Pin

± 10

mA

PD

Power Dissipation, per Package†

500

mW

Tstg

Storage Temperature

– 65 to + 150

_C

TL

Lead Temperature (8–Second Soldering)

260

_C

* Maximum Ratings are those values beyond which damage to the device may occur.

†Temperature Derating:

Plastic “P and D/DW” Packages: – 7.0 mW/

_C From 65_C To 125_C

Ceramic “L” Packages: – 12 mW/

_C From 100_C To 125_C

LOGIC DIAGRAM

CLOCK

RESET

11

10

Q1

Q4

Q5

Q12

Q13

Q14

9

7

5

1

2

3

C

C

R

Q

Q

C

C

R

Q

Q

C

C

R

Q

Q

C

C

R

Q

Q

C

C

R

Q

Q

C

C

Q

R

Q6 = PIN 4

Q7 = PIN 6

Q8 = PIN 13

Q9 = PIN 12

Q10 = PIN 14

Q11 = PIN 15

VDD = PIN 16

VSS = PIN 8

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

REV 3

1/94

MC14020B

L SUFFIX

CERAMIC

CASE 620

ORDERING INFORMATION

MC14XXXBCP

Plastic

MC14XXXBCL

Ceramic

MC14XXXBD

SOIC

TA = – 55° to 125°C for all packages.

P SUFFIX

PLASTIC

CASE 648

D SUFFIX

SOIC

CASE 751B

TRUTH TABLE

Clock

Reset

Output State

0

No Change

0

Advance to Next State

X

1

All Outputs are Low

X = Don’t Care