NE56631-XX Datasheet, PDF (2/11 Pages) NXP Semiconductors – Active-LOW system reset

Philips Semiconductors
Active-LOW system reset
Product data
NE56631-XX
GENERAL DESCRIPTION
The NE56631-XX is a family of Active-LOW, power-on resets that
offers precision threshold voltage detection within ±3% and super
low operating supply current of typically 1.5 µA.
Several detection threshold voltages are available at 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.
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 NE56631-XX is well suited for various
battery powered applications such as reset circuits for logic and
microprocessors, voltage check, and level detecting.
FEATURES
• High precision threshold detection voltage:
• Super low operating supply current:
I_CCH=1.5 µA typ.; I_CCL=1.0 µA typ.
• Hysteresis voltage: 50 mV typ.
V_S ±3%
• Internal Power-On-Reset Delay time: 20 µs 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
• 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.
• Reset assertion with V_CC down to 0.65 V typ.
SIMPLIFIED SYSTEM DIAGRAM
V_CC
NE56631-XX
V_OUT
GND
APPLICATIONS
• Reset for microprocessor and logic circuits
• Voltage level detection circuit
• Battery voltage check circuit
• Detection circuit for battery backup
V_CC
RESET
LOGIC SYSTEM
Figure 1. Simplified system diagram.
SL01739
2003 Feb 14
2