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MC14569B

Programmable divide-by-N dual 4-bit binary/BCD down counter

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MC14569B

Programmable Divide-By-N

Dual 4-Bit Binary/BCD

Down Counter

The MC14569B is a programmable divide–by–N dual 4–bit binary or BCD

down counter constructed with MOS P–channel and N–channel enhance-

ment mode devices (complementary MOS) in a monolithic structure.

This device has been designed for use with the MC14568B phase

comparator/counter in frequency synthesizers, phase–locked loops, and

other frequency division applications requiring low power dissipation and/or

high noise immunity.

• Speed–up Circuitry for Zero Detection

• Each 4–Bit Counter Can Divide Independently in BCD or Binary Mode

• Can be Cascaded With MC14568B, MC14522B or MC14526B for

Frequency Synthesizer Applications

• All Outputs are Buffered

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ • Schmitt Triggered Clock Conditioning

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ MAXIMUM RATINGS* (Voltages Referenced to VSS)

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 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

Iin, Iout Input or Output Current (DC or Transient),

± 10

mA

per Pin

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

BLOCK DIAGRAM

L SUFFIX

CERAMIC

CASE 620

P SUFFIX

PLASTIC

CASE 648

DW SUFFIX

SOIC

CASE 751G

ORDERING INFORMATION

MC14XXXBCP

MC14XXXBCL

MC14XXXBDW

Plastic

Ceramic

SOIC

TA = – 55° to 125°C for all packages.

CTL = Low for Binary Count

CTL = High for BCD Count

P0 P1 P2 P3

345 6

CTL1 CTL2

2 10

P4 P5 P6 P7

11 12 13 14

VDD = PIN 16

VSS = PIN 8

9

BINARY/BCD

CLOCK

BINARY/BCD

15

CLOCK

COUNTER #1

LOAD

COUNTER #2

Q

CASCADE 7

FEEDBACK

REV 3

1/94

©MMOotoTrOolaR, IOncL. A199C5MOS LOGIC DATA

ZERO DETECT ENCODER

1 ZERO

DETECT

MC14569B

1

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