REJ03D0911-0100 Rev.1.00 Oct 10, 2008

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RNA51953A,B

Voltage Detecting, System Resetting IC Series

REJ03D0911-0100

Rev.1.00

Oct 10, 2008

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 µF)

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

• 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)

RNA51953BFPH0

SOP-8 pin

PRSP0008DE-C

FP

H (2,500 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

Outline and Article Indication

• RNA51953A, B

Y : Year Code

(the last digit of year)

M : Month Code

W : Week Code

C : Control Code

Lot No.

Trace Code

Pin No.1

SOP-8

R 9 5 3 B

YMWC

CCC

Type No.

R 9 5 3 A

YMWC

CCC