ILC705 Impala Linear Corporation, ILC705 Datasheet

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ILC705

Manufacturer Part Number
ILC705
Description
MP SUPERVISORY CIRCUIT
Manufacturer
Impala Linear Corporation
Datasheet
The ILC705/ILC706/ILC707/ILC708 are low cost micro-
processor supervisory circuits that monitor power sup-
plies in microprocessor based systems. Circuit functions
include a watchdog timer, microprocessor reset, power
failure warning and a debounced manual reset input.
The ILC705 and ILC706 offer a watchdog timer function
while the ILC707 and ILC708 have an active high reset
output in addition to the active low reset output.
Supply voltage monitor levels of 4.65V and 4.4V are
available. The ILC705/ILC707 have a nominal reset
threshold level of 4.65V while the ILC706 and ILC708
have a 4.4V nominal reset threshold level. When the sup-
ply voltage drops below the respective reset threshold
level, RESET is asserted.
ILC705-708 1.0
General Description
Pin Package Configuration
ILC705/706/707/708
mP Supervisory Circuit
Impala Linear Corporation
Impala Linear Corporation
GND
GND
V
V
PFI
PFI
MR
MR
N Package - 8 Lead Plastic DIP Package
M Package - 8 Lead Plastic SOIC Package
CC
CC
1
2
3
4
1
2
3
4
Top View
ILC705
ILC706
ILC707
ILC708
8
7
6
5
8
7
6
5
WDO
RESET
WDI
PFO
RESET
RESET
NC
PFO
(408) 574-3939
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Applications
www.impalalinear.com
Features
Typical Circuit
(Unregulated)
4.4V or 4.65V Precision Voltage Monitor
200ms Reset Pulse Width
Debounced TTL/CMOS Compatible Manual Reset Input
Watchdog Timer with 1.6 sec Timeout (ILC705/ILC706)
Voltage Monitor for Early Power Fail Warning or Low
8-Pin SOIC or DIP Package
Computers
Controllers
Critical Microprocessor Power Monitoring
Intelligent Instruments
Portable Equipment
Battery Detect
DC Voltage
Ordering Information
Part
ILC70_N
ILC70_M
Manual
Reset
Package
8-Lead PDIP
8-Lead SOIC
MR
PFI
ILC705
ILC706
GND
V
CC
RESET
WDO
PFO
WDI
+5 V (Regulated)
Temp. Range
-40°C to +85°C
-40°C to +85°C
RESET
I/O Line
NMI
Interrupt
Sept 1999
V
CC
P
1

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ILC705 Summary of contents

Page 1

... Circuit functions include a watchdog timer, microprocessor reset, power failure warning and a debounced manual reset input. The ILC705 and ILC706 offer a watchdog timer function while the ILC707 and ILC708 have an active high reset output in addition to the active low reset output. ...

Page 2

... Exposure to absolute maximum ratings for extended periods may affect device reliability. Operating ranges define those limits between which the functionality of the device is guaranteed. Electrical Characterisitcs 5.5 V for ILC705/ILC707 otherwise noted. Parameter Operating Voltage Range, V ...

Page 3

... WDO 8 RESET N/A Impala Linear Corporation ILC705-708 1.0 Manual reset input. MR forces RESET to assert when pulled below 0.8V internal pull-up current of 250 mA on this input forces it high when left floating. This input can also be driven from TTL or CMOS logic. 2 Power supply input, 5V. ...

Page 4

... ILC705/ILC706. Power Fail Warning An additional comparator which is independent of other functions on the ILC705/706/707/708 is provided for early warning of power failure. An external voltage divider can be used to compare unregulated internal 1.25V ref- erence. The voltage divider ratio on the input of the power Impala Linear Corporation ILC705-708 1 ...

Page 5

... Impala Linear Corporation. Impala Linear Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an Impala Linear Corporation product. No other circuits, patents, licenses are implied. Impala Linear Corporation ILC705-708 1.0 0.197 0.190 M Package, 8-Pin Small Outline ...

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