TLC555-DIE

www.ti.com

SLFS079 – JULY 2012

LinCMOS™ TIMER

1

FEATURES

2

•

Very Low Power Consumption

•

Functionally Interchangeable With the NE555;

Has Same Pinout

•

Capable of Operation in Astable Mode

•

ESD Protection Exceeds 2000 V Per

•

CMOS Output Capable of Swinging Rail to Rail

MIL-STD-883C, Method 3015.2

•

High Output-Current Capability

•

Available in Q-Temp Automotive

•

Output Fully Compatible With CMOS, TTL, and

–

High Reliability Automotive Applications

MOS

–

Configuration Control/Print Support

•

Low Supply Current Reduces Spikes During

Output Transitions

–

Qualification to Automotive Standards

•

Single-Supply Operation From 2 V to 15 V

DESCRIPTION

The TLC555 is a monolithic timing circuit fabricated using the TI LinCMOS process. The timer is fully compatible

with CMOS, TTL, and MOS logic and operates at frequencies up to 2 MHz. Because of its high input impedance,

this device uses smaller timing capacitors than those used by the NE555. As a result, more accurate time delays

and oscillations are possible. Power consumption is low across the full range of power supply voltage.

Like the NE555, the TLC555 has a trigger level equal to approximately one-third of the supply voltage and a

threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the

control voltage terminal (CONT). When the trigger input (TRIG) falls below the trigger level, the flip-flop is set and

the output goes high. If TRIG is above the trigger level and the threshold input (THRES) is above the threshold

level, the flip-flop is reset and the output is low. The reset input (RESET) can override all other inputs and can be

used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low. Whenever the

output is low, a low-impedance path is provided between the discharge terminal (DISCH) and GND. All unused

inputs should be tied to an appropriate logic level to prevent false triggering.

While the CMOS output is capable of sinking over 100 mA and sourcing over 10 mA, the TLC555 exhibits greatly

reduced supply-current spikes during output transitions. This minimizes the need for the large decoupling

capacitors required by the NE555.

PACKAGE

PRODUCT

PACKAGE

ORDERABLE PART NUMBER

PACKAGE QUANTITY

DESIGNATOR

TLC555TDF1

210

TLC555

TD

TLC555TDF2

10

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

Processing is per the Texas Instruments commercial production baseline and is in compliance with the Texas Instruments Quality

Control System in effect at the time of manufacture. Electrical screening consists of DC parametric and functional testing at room

temperature only. Unless otherwise specified by Texas Instruments AC performance and performance over temperature is not

warranted. Visual Inspection is performed in accordance with MIL-STD-883 Test Method 2010 Condition B at 75X minimum.

1

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.

2

LinCMOS is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.