REJ03D0911-0402 Rev.4.02

Page 1 of 10

Apr 01, 2010

RNA51953A, B

Voltage Detecting, System Resetting IC Series

Description

RNA51953A,B are semiconductor integrated circuits designed for detecting supply voltage and resetting all types of

logic circuits such as CPUs.

They include a built-in delay circuit to provide the desired retardation time simply by adding an external capacitor.

They fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping

circuit.

Features

 Few external parts

 Large delay time with a capacitor of small capacitance (td  100 ms, at 0.33 F)

 Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage):

0.6 V (Typ) at RL = 22 k



 Wide supply voltage range: 2 V to 17 V

 Wide application range

 Ordering Information

Part Name

Package Type

Package Code

Package

Abbreviation

Taping Abbreviation

(Quantity)

Surface

Treatment

RNA51953AFPH0

SOP-8 pin

PRSP0008DE-C

FP

H (2,500 pcs / Reel)

0 (Ni/Pd/Au)

RNA51953APT0

DIP-8 pin

PRDP0008AF-B

P

T (1,000 pcs / Reel)

0 (Ni/Pd/Au)

RNA51953BFPH0

SOP-8 pin

PRSP0008DE-C

FP

H (2,500 pcs / Reel)

0 (Ni/Pd/Au)

RNA51953BPT0

DIP-8 pin

PRDP0008AF-B

P

T (1,000 pcs / Reel)

0 (Ni/Pd/Au)

Application

 Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and MCU, Reset of logic circuit, Battery check circuit,

switching circuit back-up voltage, level detecting circuit, waveform shaping circuit, delay waveform generating

circuit, DC/DC converter, over voltage protection circuit

Recommended Operating Condition

 Supply voltage range: 2 V to 17 V

REJ03D0911-0402

Rev.4.02

Apr 01, 2010