RNA51957A_15 Datasheet, PDF (1/14 Pages) Renesas Technology Corp – Voltage Detecting, System Resetting IC Series

Preliminary Datasheet
RNA51957A, B
Voltage Detecting, System Resetting IC Series
R03DS0010EJ0500
Rev.5.00
Jun 19, 2012
Description
RNA51957A,B are semiconductor integrated circuits for resetting of all types of logic circuits such as CPUs, and has
the feature of setting the detection voltage by adding external resistance.
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 Taping Abbreviation
Abbreviation
(Quantity)
RNA51957AFPH0
SOP-8 pin
PRSP0008DE-C
FP
H (2,500 pcs / Reel)
RNA51957APT0
DIP-8 pin
PRDP0008AF-B
P
T (1,000 pcs / Box)
RNA51957BFPH0
SOP-8 pin
PRSP0008DE-C
FP
H (2,500 pcs / Reel)
RNA51957BPT0
DIP-8 pin
PRDP0008AF-B
P
T (1,000 pcs / Box)
Surface
Treatment
0 (Ni/Pd/Au)
0 (Ni/Pd/Au)
0 (Ni/Pd/Au)
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
R03DS0010EJ0500 Rev.5.00
Jun 19, 2012
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