NE56632-29D datasheet(2/16 Pages) PHILIPS

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Philips Semiconductors

Product data

NE56632-XX

Active-LOW system reset with adjustable delay time

2002 Mar 25

853–2329 27919

DESCRIPTION

The NE56632-XX is a family of Active-LOW, power-on reset that

offers precision threshold voltage detection within

±1.5% and super

low operating supply current of typically 3.0

µA. It includes a reset

delay that is user adjustable with an external capacitor.

Several detection threshold voltages are available at 1.9V , 2.0 V,

2.7 V, 2.8 V, 2.9 V, 3.0 V, 3.1 V, 4.2 V, 4.3 V, 4.4 V, 4.5 V, and 4.6 V.

Other thresholds are offered upon request at 100 mV steps from

1.9 V to 4.6 V.

With its ultra low supply current and high precision voltage threshold

detection capability, the NE56632-XX is well suited for various

battery powered applications such as reset circuits for logic and

microprocessors, voltage check, and level detecting. It is available in

the SOT23-5 package.

FEATURES

• High precision threshold detection voltage: V

S ±1.5%

• Super low operating supply current: 3 µA typ.

• Built-in hysteresis voltage: 50 mV typ.

• Detection threshold voltage: 1.9 V, 2.0 V, 2.7 V, 2.8 V, 2.9 V,

3.0 V, 3.1 V, 4.2 V, 4.3 V, 4.4 V, 4.5 V, and 4.6 V.

• Reset Output: Active-LOW, open collector

• Other detection threshold voltages available upon request at

100 mV steps from 1.9 V to 4.6 V.

• Large low reset output current: 30 mA typ.

• Power-on reset delay time adjustable with external capacitor:

200

µs to 200 ms

• Reset assertion with V

CC down to 0.65 V

APPLICATIONS

• Reset for microprocessor and logic circuits

• Voltage level detection circuit

• Battery voltage check circuit

• Detection circuit for battery back-up

SIMPLIFIED SYSTEM DIAGRAM

NE56632-XX

RPU

TO RESET

TERMINAL

OF CPU

SL01605

TO VCC

Figure 1. Simplified system diagram.

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