Specification	CAT1023YI-42-GT3

Mounting Type	Surface Mount
Number of Voltages Monitored	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output	Open Drain or Open Collector
Package / Case	8-TSSOP
Package / Case [custom]	0.173 "
Package / Case [custom]	4.4 mm
Reset	Active High/Active Low
Reset Timeout	130 ms
Supplier Device Package	8-TSSOP
Type	Simple Reset/Power-On Reset
Voltage - Threshold	4.25 V

CAT1023 Series

Part	Number of Voltages Monitored	Voltage - Threshold	Output	Type	Reset Timeout	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Reset	Mounting Type	Package / Case	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Package / Case	Package / Case [custom]	Package / Case
ON Semiconductor CAT1023WI28	1	2.85 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-SOIC	Active High/Active Low	Surface Mount	8-SOIC	3.9 mm	0.154 in
ON Semiconductor CAT1023WI-45-A2	1	4.5 V 4.75 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-SOIC	Active High/Active Low	Surface Mount	8-SOIC	3.9 mm	0.154 in
ON Semiconductor CAT1023WI30	1	3 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-SOIC	Active High/Active Low	Surface Mount	8-SOIC	3.9 mm	0.154 in
ON Semiconductor CAT1023WI-42-G	1	4.25 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-SOIC	Active High/Active Low	Surface Mount	8-SOIC	3.9 mm	0.154 in
ON Semiconductor CAT1023ZI-25-T3	1	2.55 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-MSOP	Active High/Active Low	Surface Mount	8-MSOP 8-TSSOP			0.118 in	3 mm
ON Semiconductor CAT1023YI-42-GT3	1	4.25 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-TSSOP	Active High/Active Low	Surface Mount	8-TSSOP			0.173 "		4.4 mm
ON Semiconductor CAT1023LI-42	1	4.25 V 4.5 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-PDIP	Active High/Active Low	Through Hole	8-DIP				0.3 in		7.62 mm
ON Semiconductor CAT1023WI-28-GT3	1	2.85 V	Open Drain or Open Collector	Simple Reset/Power-On Reset	130 ms	85 °C	-40 °C	8-SOIC	Active High/Active Low	Surface Mount	8-SOIC	3.9 mm	0.154 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	339	$ 0.89

Description

General part information

CAT1023 Series

The CAT1023 is a complete memory and supervisory solution for microcontroller based systems. A EEPROM Serial 2-Kb CPU Supervisor and a system power supervisor with brown-out protection are integrated together in low power CMOS technology. Memory interface is via a 400 kHz I²C bus.The CAT1023 provides a precision VCCsense circuit and two open drain outputs: one (RESET) drives high and the other (RESET) drives low whenever VCCfalls below the reset threshold voltage. Write operations are disabled if WP is connected to a logic high.The supervisor has a 1.6 second watchdog timer circuit that resets a system to a known state if software or a hardware glitch halts or 'hangs' the system. The CAT1023 has a separate watchdog timer interrupt input pin, WDI.The power supply monitor and reset circuit protect memory and system controllers during power up/down and against brownout conditions. Five reset threshold voltages support 5.0 V, 3.3 V and 3.0 V systems. If power supply voltages are out of tolerance reset signals become active, preventing the system microcontroller, ASIC or peripherals from operating. Reset signals become inactive typically 200 ms after the supply voltage exceeds the reset threshold level. With both active high and low reset signals, interface to microcontrollers and other ICs is simple. In addition, theRESETpin or a separate input,MR, can be used as an input for push-button manual reset capability.The on-chip, 2k-bit EEPROM memory features a 16-byte page. In addition, hardware data protection is provided by a VCCsense circuit that prevents writes to memory whenever VCCfalls below the reset threshold or until VCCreaches the reset threshold during power up.Available packages include an 8-pin DIP, 8-pin SOIC, 8-pin TSSOP, 8-pin TDFN and 8-pin MSOP. The TDFN package thickness is 0.8mm maxi