Datasheet > M3851010902BCA

M3851010902BCA

更新时间： 2024-11-12 12:34:51

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
19页	755K
描述
DUAL PRECISION TIMERS

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M3851010902BCA 数据手册

NA556, NE556, SA556, SE556

DUAL PRECISION TIMERS

www.ti.com

SLFS023G–APRIL 1978–REVISED JUNE 2006

FEATURES

NA556...D OR N PACKAGE

NE556...D, N, OR NS PACKAGE

SA556...D OR N PACKAGE

SE556...J PACKAGE

•

Two Precision Timing Circuits Per Package

Astable or Monostable Operation

(TOP VIEW)

TTL-Compatible Output Can Sink or Source

up to 150 mA

1DISCH

1THRES

1CONT

1RESET

1OUT

•

Active Pullup or Pulldown

2DISCH

2THRES

2CONT

2RESET

2OUT

Designed to Be Interchangeable With

Signetics NE556, SA556, and SE556

APPLICATIONS

•

1TRIG

GND

Precision Timers From Microseconds to

Hours

2TRIG

•

Pulse-Shaping Circuits

Missing-Pulse Detectors

Tone-Burst Generators

Pulse-Width Modulators

Pulse-Position Modulators

Sequential Timers

Pulse Generators

Frequency Dividers

Application Timers

Industrial Controls

Touch-Tone Encoders

DESCRIPTION/ORDERING INFORMATION

These devices provide two independent timing circuits of the NA555, NE555, SA555, or SE555 type in each

package. These circuits can be operated in the astable or the monostable mode with external resistor-capacitor

(RC) timing control. The basic timing provided by the RC time constant can be controlled actively by modulating

the bias of the control-voltage input.

The threshold (THRES) and trigger (TRIG) levels normally are two-thirds and one-third, respectively, of V_CC

These levels can be altered by using the control voltage (CONT) terminal. When the trigger input falls below

trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the

threshold input is above the threshold level, the flip-flop is reset, and the output is low. The reset (RESET) input

can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop

is reset and the output goes low. When the output is low, a low-impedance path is provided between the

discharge (DISCH) terminal and ground (GND).

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

On products compliant to MIL-PRF-38535, all parameters are

Instruments standard warranty. Production processing does not

tested unless otherwise noted. On all other products, production

necessarily include testing of all parameters.

processing does not necessarily include testing of all parameters.

12 3 4 5 6 7...19

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