ASM708SEPAF datasheet, PDF - EEWORLD Datasheet

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ASM708SEPAF: DescriptionPower Supply Support Circuit, Fixed, 2 Channel, CMOS, PDIP8, ROHS COMPLIANT, PLASTIC, DIP-8; CategoryPower/power management The power supply circuit; File Size306KB，18 Pages; ManufacturerALSC [Alliance Semiconductor Corporation]; Environmental Compliance

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ASM708SEPAF Overview

Power Supply Support Circuit, Fixed, 2 Channel, CMOS, PDIP8, ROHS COMPLIANT, PLASTIC, DIP-8

ASM708SEPAF Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	ALSC [Alliance Semiconductor Corporation]
Parts packaging code	DIP
package instruction	DIP, DIP8,.3
Contacts	8
Reach Compliance Code	unknown
ECCN code	EAR99
Other features	RESET THRESHOLD VOLTAGE IS 2.93V; MANUAL RESET INPUT
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDIP-T8
length	9.59 mm
Number of channels	2
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP8,.3
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
power supply	1.2/5.5 V
Certification status	Not Qualified
Maximum seat height	5.33 mm
Maximum supply current (Isup)	0.14 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1.2 V
Nominal supply voltage (Vsup)	3 V
surface mount	NO
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	7.62 mm

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ASM706 P/ R/ S/ T/ J

ASM708 R/ S/ T/ J

April 2005

rev 1.5

3/3.3/4.0 V µP Supervisor Circuits

Features

•

Precision power supply monitor

•2.63V threshold (ASM706P/R, ASM708R)

•2.93V threshold (ASM706S, ASM708S)

•3.08V threshold (ASM706T, ASM708T)

•New 4.00V threshold (ASM706J, ASM708J)

•

Debounced manual reset input

Auxiliary voltage monitor comparator

•1.25V threshold

•Battery monitor / auxiliary supply monitor

•

Watchdog timer (ASM706P/R/S/T/J)

•Watchdog can be disabled by floating WDI

200ms reset time delay

Three reset signal options

•Active HIGH: ASM706P

•Active LOW: ASM706R/S/T/J

•Active HIGH and LOW outputs: ASM708R/S/T/J

•

DIP, SO and MicroSO packages

Guaranteed RESET assertion to V

= 1.1V

General Description

The ASM706P/R/S/T/J and ASM708R/S/T/J are cost effective

CMOS supervisor circuits that monitor power-supply, battery

voltage level and

µP/µC

operation.

The family offers several functional options. Each device

generates a reset signal during power-up, power-down and

brownout conditions. A reset is generated when the supply

drops

below

2.63V

(ASM706P/R,

ASM708R),

2.93V

(ASM706S, ASM708S), 3.08V (ASM706T, ASM708T) or 4.00V

(ASM706J, ASM708J). In addition, the ASM706P/R/S/T/J

feature a 1.6 second watchdog timer. The watchdog timer

output will trigger a reset if connected to MR. Floating the WDI

input pin disables the watchdog timer.

The ASM708R/S/T/J have both active-HIGH and active-LOW

reset outputs but no watchdog function. The ASM706P has the

same pin-out and functions as the ASM706R but has an active-

HIGH reset output.

A versatile power-fail circuit, useful in checking battery levels

and non-5V supplies, has a 1.25V threshold. All devices have a

manual reset input. All devices are available in 8-pin DIP, SO

and the compact MicroSO packages. The MicroSO package

requires 50% less PC board area than the conventional SO

package.

Applications

•

Computers and embedded controllers

CTI applications

Automotive systems

Portable/Battery-operated systems

Intelligent instruments

Wireless communication systems

PDAs and hand-held equipment

Safety systems

Typical Operating Circuit

Unregulated DC

+3.3V Regulator

PFI

ASM706 R/S/T

ASM708 R/S/T

(ASM706 P)

µP

RESET

(RESET)

WDI

WDO

PFO

RESET

(RESET)

I/O LINE

NMI

INTERRUPT

Alliance Semiconductor

2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com

Notice: The information in this document is subject to change without notice

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