DRB PACKAGE

TLC7701, TLC7725, TLC7703

TLC7733, TLC7705

www.ti.com

SLVS087M –DECEMBER 1994–REVISED MARCH 2012

Micropower Supply Voltage Supervisors

Check for Samples: TLC7701, TLC7725, TLC7703 , TLC7733, TLC7705

FEATURES

• Power-On Reset Generator

• Automatic Reset Generation After Voltage

Drop

• Precision Voltage Sensor

• Temperature-Compensated Voltage Reference

• Programmable Delay Time by External

Capacitor

• Supply Voltage Range . . . 2 V to 6 V

• Defined RESET Output from V

≥ 1 V

• Power-Down Control Support for Static RAM

With Battery Backup

• Maximum Supply Current of 16 µA

• Power Saving Totem-Pole Outputs

• Temperature Range . . . Up to –55°C to 125°C

APPLICATIONS

• Medical Imaging

DESCRIPTION

The TLC77xx family of micropower supply voltage

supervisors provide reset control, primarily in

microcomputer and microprocessor systems.

During power-on, RESET is asserted when V

reaches 1 V. After minimum V

(≥2 V) is

established, the circuit monitors SENSE voltage and

keeps the reset outputs active as long as SENSE

voltage (V

I(SENSE)

) remains below the threshold

voltage. An internal timer delays return of the output

to the inactive state to ensure proper system reset.

The delay time, t

, is determined by an external

capacitor:

= 2.1 × 10

× C

Where

is in farads

is in seconds

SPACER

Except for the TLC7701, which can be customized with two external resistors, each supervisor has a fixed sense

threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold voltage, the

outputs become active and stay in that state until SENSE voltage returns above threshold voltage and the delay

time, t

, has expired.

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

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

TLC7701, TLC7725, TLC7703

TLC7733, TLC7705

SLVS087M –DECEMBER 1994–REVISED MARCH 2012

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

DESCRIPTION (CONTINUED)

In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control

support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor

contains additional logic intended for control of static memories with battery backup during power failure. By

driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL

driven by the memory bank select signal (CSH1) of the microprocessor (see Figure 10), the memory circuit is

automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the

battery.)

The TLC77xxI is characterized for operation over a temperature range of –40°C to 85°C; the TLC77xxQ is

characterized for operation over a temperature range of –40°C to 125°C; and the TLC77xxM is characterized for

operation over the full Military temperature range of –55°C to 125°C.

The 3x3 mm DRB package is also available as a non-magnetic package for medical imaging application.

AVAILABLE OPTIONS

PACKAGED DEVICES

THRESHOLD

THIN SHRINK

CHIP CERAMIC CERAMIC

SMALL OUTLINE

VOLTAGE

PLASTIC DIP

SMALL

CARRIER DIP DUAL

SMALL OUTLINE NO LEAD

(V)

OUTLINE (D)

(1)

(P)

(DRB)

(FK) (JG) FLATPACK (U)

(PW)

(2)

1.1 TCLC7701ID — — — TCLC7701IP TCLC7701IPWR —

2.25 TLC7725ID — — — TLC7725IP TLC7725IPWR —

2.63 TLC7703ID — — — TLC7703IP TLC7703IPWR —

–40°C to

85°C

2.93 TLC7733ID — — — TLC7733IP TLC7733IPWR —

4.55 TLC7705ID — — — TLC7705IP TLC7705IPWR —

1.1 TLC7701IDBR — — — — — TLC7701IDRBT-NM

1.1 TLC7701QD — — — TLC7701QP TLC7701QPWR —

2.25 TLC7725QD — — — TLC7725QP TLC7725QPWR —

–40°C to

2.63 TLC7703QD — — — TLC7703QP TLC7703QPWR —

125°C

2.93 TLC7733QD — — — TLC7733QP TLC7733QPWR —

4.55 TLC7705QD — — — TLC7705QP TLC7705QPWR —

2.93 — — — — — — —

–55°C to

125°C

4.55 — — — — — — —

(1) The D package is available taped and reeled. Add the suffix R to the device type when ordering (e.g., TLC7705QDR).

(2) The PW package is only available left-end taped and reeled (indicated by the R suffix on the device type; e.g., TLC7705QPWR).

Table 1. FUNCTION TABLE

CONT RESIN V

I(SENSE)

IT+

RESE RESET

ROL T

L L False H L

L L True H L

L H False H L

L H True L

(1)

H L False H L

H L True H L

H H False H L

H H True H H

(1)

(1) RESET and RESET states shown are valid for t > t

Product Folder Link(s): TLC7701, TLC7725, TLC7703 TLC7733, TLC7705

TLC7701, TLC7725, TLC7703

TLC7733, TLC7705

www.ti.com

SLVS087M –DECEMBER 1994–REVISED MARCH 2012

LOGIC SYMBOL

(1) This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Product Folder Link(s): TLC7701, TLC7725, TLC7703 TLC7733, TLC7705

Part #	5962-9750901Q2A
Description	VOLT SUPERVISOR SUPPLY 5V 20-PIN LCCC
Category	IC
Availability	Out of Stock
Qty	0

5962-9750901Q2A

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