M51953A Datasheet, PDF (1/11 Pages) Mitsubishi Electric Semiconductor – VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES

M51953A,B/M51954A,B
Voltage Detecting, System Resetting IC Series
REJ03D0776-0200
Rev.2.00
Aug 20, 2007
Description
M51953A,B/M51954A,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) (M51953, M51954)
• Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage):
0.6 V (Typ) at R_L = 22 kΩ
• Wide supply voltage range: 2 V to 17 V
• Wide application range
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
Pin Arrangement
M51953AL/BL
M51954AL/BL
M51953AFP/BFP
M51954AFP/BFP
5 Output
4 Delay capacitor
3 GND
2 NC
1 Power-supply
(Top view)
Outline: 5P5T
NC 1
8 NC
NC 2
7 Power-supply
NC 3
6 Output
GND 4
5 Delay capacitor
(Top view)
NC: No Connection
Outline: PRSP0008DE-C (recommend)
PRSP0008DA-A (8P2S-A) (not recommend for new design)
REJ03D0776-0200 Rev.2.00 Aug 20, 2007
Page 1 of 10