UTCCD4541

CMOS IC

1

www.unisonic.com.tw

QW-R502-037,A

PROGRAMMABLE TIMER

DESCRIPTION

The UTC CD4541 programmable timer comprise a

16-stage binary counter, an integrated oscillator for use with

an external capacitor and two resistors, output control logic,

and a special power-on reset circuit. The counter divides the

oscillator frequency by any of 4 digitally controlled division

ratios.

FEATURES

*Operates at 2

timer

*Increments on positive edge clock transitions

*Wide supply voltage range: 3.0V ~ 15V

*Built-in low power RC oscillator

*Oscillator frequency range ~ DC to 100 kHz

*External clock applied to Pin 3 can be used instead of

oscillator

*

Available division ratios 2

*Master reset totally independent of automatic reset

operation

*Automatic reset initializes all counters when power turns on

*Q/Q select provides output logic level flexibility

*High output drive min. one TTL load

*Maximum input leakage 1μA at 15V over full temperature

range

DIP-14

SOP-14

*Pb-free plating product number: CD4541L

PIN CONFIGURATION

MR

N.C.

AR

Rs

A

B

Rtc

MODE

Q/Q SELECT

Q

Vss

1

2

3

4

5

6

7

8

14

13

12

11

10

9

Ctc

N.C.