CAT1026JE-45TE13 datasheet, PDF

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CAT1026JE-45TE13: DescriptionRELAY OPTOMOS 120MA 4-SOP; CategoryPower/power management The power supply circuit; File Size154KB，20 Pages; ManufacturerCatalyst; Websitehttp://www.catalyst-semiconductor.com/

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CAT1026JE-45TE13 Overview

RELAY OPTOMOS 120MA 4-SOP

CAT1026JE-45TE13 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Catalyst
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Reach Compliance Code	unknow
ECCN code	EAR99
Adjustable threshold	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.9 mm
Number of channels	2
Number of functions	1
Number of terminals	8
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	240
power supply	3.3/5 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply current (Isup)	3 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	3 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
technology	CMOS
Temperature level	AUTOMOTIVE
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3.9 mm

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CAT1026, CAT1027

Dual Voltage Supervisory Circuits with I

C Serial 2k-bit CMOS EEPROM

FEATURES

■

Precision V

power supply voltage monitor

■

Low power CMOS technology

■

16-Byte page write buffer

GEN

ALO

— 5V, 3.3 V and 3 V systems

— Five threshold voltage options

■

Additional voltage monitoring

■

Built-in inadvertent write protection

■

1,000,000 Program/Erase cycles

■

Manual reset capability

■

100 year data retention

■

8-pin DIP, SOIC, TSSOP, MSOP or TDFN

— Externally adjustable down to 1.25 V

■

Watchdog timer (CAT1027 only)

■

Active high or low reset

— Valid reset guaranteed to V

= 1 V

■

400 kHz I

C bus

■

3.0 V to 5.5 V operation

(3 x 3 mm foot-print) packages

— TDFN max height is 0.8mm

■

Industrial and extended temperature ranges

DESCRIPTION

The CAT1026 and CAT1027 are complete memory and

supervisory solutions for microcontroller-based systems.

A 2k-bit serial EEPROM memory and a system power

supervisor with brown-out protection are integrated

together in low power CMOS technology. Memory

interface is via a 400kHz I

C bus.

The CAT1026 and CAT1027 provide a precision V

sense circuit with five reset threshold voltage options

that support 5V, 3.3V and 3V systems. The power

supply monitor and reset circuit protects memory and

systems controllers during power up/down and against

brownout conditions. If power supply voltages are out of

tolerance reset signals become active preventing the

system microcontroller, ASIC, or peripherals from

operating.

used as an input for push-button manual reset capability.

The CAT1026 and CAT1027 provide an auxiliary voltage

sensor input, V

SENSE

, which is used to monitor a second

system supply. The auxiliary high impedance comparator

drives the open drain output, V

LOW

, whenever the sense

voltage is below 1.25V threshold.

The CAT1027 is designed with 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 CAT1027

features a watchdog timer interrupt input, WDI.

The on-chip 2k-bit EEPROM memory features a 16-byte

page. In addition, hardware data protection is provided by a

sense circuit that prevents writes to memory whenever

falls below the reset threshold or until V

reaches the

The CAT1026 features two open drain reset outputs: reset threshold during power up.

one (RESET) drives high and the other (RESET) drives Available packages include an 8-pin DIP, 8-pin SOIC, 8-

low whenever V

falls below the threshold. Reset pin TSSOP, 8-pin TDFN and 8-pin MSOP. The TDFN

outputs become inactive typically 200 ms after the package thickness is 0.8mm maximum. TDFN footprint is

supply voltage exceeds the reset threshold value. With 3x3mm.

both active high and low reset signals, interface to

microcontrollers and other ICs is simple. CAT1027 has

only a

RESET

output. In addition, the

RESET

pin can be

Characteristics subject to change without notice

Doc No. 3010, Rev. K

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