Datasheet > CD4541BC_02

CD4541BC_02

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
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8页	86K
描述
Programmable Timer

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数据手册

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CD4541BC_02 数据手册

October 1987

Revised May 2002

CD4541BC

Programmable Timer

General Description

Features

■ Available division ratios 2⁸, 2¹⁰, 2¹³, or 2¹⁶

The CD4541BC Programmable Timer is designed with 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 special fea-

tures of the power-on reset circuit are first, no additional

static power consumption and second, the part functions

across the full voltage range (3V–15V) whether power-on

reset is enabled or disabled.

■ Increments on positive edge clock transitions

■ Built-in low power RC oscillator (±2% accuracy over

temperature range and ±10% supply and ±3% over pro-

cessing @ < 10 kHz)

■ Oscillator frequency range ≈ DC to 100 kHz

■ Oscillator may be bypassed if external clock is available

(apply external clock to pin 3)

Timing and the counter are initialized by turning on power,

if the power-on reset is enabled. When the power is

already on, an external reset pulse will also initialize the

timing and counter. After either reset is accomplished, the

oscillator frequency is determined by the external RC net-

work. The 16-stage counter divides the oscillator frequency

by any of 4 digitally controlled division ratios.

■ Automatic reset initializes all counters when power turns

■ External master reset totally independent of automatic

reset operation

■ Operates at 2ⁿfrequency divider or single transition

timer

■ Q/Q select provides output logic level flexibility

■ Reset (auto or master) disables oscillator during reset-

ting to provide no active power dissipation

■ Clock conditioning circuit permits operation with very

slow clock rise and fall times

■ Wide supply voltage range—3.0V to 15V

■ High noise immunity—0.45 V_DD(typ.)

■ 5V–10V–15V parameter ratings

■ Symmetrical output characteristics

■ Maximum input leakage 1 µA at 15V over full tempera-

ture range

■ High output drive (pin 8) min. one TTL load

Ordering Code:

Order Number Package Number

Package Description

CD4541BCM

CD4541BCN

M14A

N14A

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

N.C.—Not connected

Top View

DS006001

www.fairchildsemi.com

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