CAT809 CATALYST [Catalyst Semiconductor], CAT809 Datasheet

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CAT809

Manufacturer Part Number
CAT809
Description
3-Pin Microprocessor Power Supply Supervisors
Manufacturer
CATALYST [Catalyst Semiconductor]
Datasheet

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The CAT809 and CAT810 are P supervisory circuits
that monitor power supplies in digital systems. The
CAT809 and CAT810 are direct replacements for the
MAX809 and MAX810 in applications operating over the
industrial temperature range.
These devices generate a reset signal, which is asserted
while the power supply voltage is below a preset threshold
level and for at least 140 ms after the power supply level
has risen above that level. The underlying floating gate
technology, AE
makes it possible to offer any custom reset threshold
value. Seven industry standard threshold levels are
© 2004 by Catalyst Semiconductor, Inc., Patent Pending
Characteristics subject to change without notice
Nominal Threshold
Voltage
4.63V
4.38V
4.00V
3.08V
2.93V
2.63V
2.32V
2(TM)
used by Catalyst Semiconductor,
Threshold Suffix
Designation
M
T
S
R
Z
L
J
1
offered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V
systems.
The CAT809 features a RESET push-pull output (active
LOW) and the CAT810 features a RESET push-pull
output (active HIGH).
Fast transients on the power supply are ignored and the
output is guaranteed to be in the correct state at V
levels as low as 1.0 V.
The CAT809/810 are fully specified over the industrial
temperature range (-40˚C to 85˚C) and are available in
compact 3-pin SOT23 and SC70 packages.
Doc. No. 3004, Rev. S
cc
TM

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CAT809 Summary of contents

Page 1

... Fast transients on the power supply are ignored and the output is guaranteed the correct state at V levels as low as 1.0 V. The CAT809/810 are fully specified over the industrial temperature range (-40˚C to 85˚C) and are available in compact 3-pin SOT23 and SC70 packages. ...

Page 2

... Insert threshold suffix ( into the blank position. Example: CAT809LTBI-T for 4. ...

Page 3

GND RESET 2 — — 2 RESET Patent Pending Ground Active LOW reset. RESET is asserted if V and remains low for at least 140ms after V Active HIGH reset. RESET is asserted if ...

Page 4

Any pin with respect to ground .......... -0 +6.0 V Input Current, V ............................................. Output Current, RESET, RESET ...................... 20 mA Rate of Rise ............................................................. Continuous Power Dissipation Derate 2.2mW/˚C above 70˚C (SC70) ...

Page 5

... RESET Output Voltage High V OH (Push-pull active HIGH, CAT810) Note 1: Production testing done +25˚C; limits over temperature guaranteed by design only. A Note 2: RESET output for the CAT809; RESET output for the CAT810 Patent Pending (continued for R version and ...

Page 6

V = Full range -40˚C to +85˚C unless otherwise noted. Typical values L/M/J versions, V =3.3 V for T/S versions POWER-UP RESET TIMEOUT VS. TEMPERATURE 260 240 V CC =5V 220 200 ...

Page 7

... The reset signal is asserted LOW for the CAT809 and HIGH for the CAT810 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 140ms after the power supply voltage has risen above the threshold. Power ...

Page 8

... V CC RESET GND RESET RESET RESET RESET RESET The CAT809/810 can interface with P/ C bi-directional reset pins by connecting a 4.7 k resistor in series with the CAT809/810 reset output and the P/ C bi-directional reset pin. Power Supply V CC CAT809 GND Doc. No. 3004, Rev ...

Page 9

With 16k Bit Serial EEPROM Memory Watchdog Timer Manual Reset Input Active Low Reset Active High Reset Dual Polarity Reset Outputs Package DIP and SOIC Patent Pending 8-pin 8-pin 3-pin DIP and SOIC SOT23 and SC70 9 3-pin 4-pin 4-pin ...

Page 10

Doc. No. 3004, Rev 0.0350 A1 0.0005 B 0.0146 c 0.0033 D 0.1102 E 0.0472 e 0.0350 e1 0.0701 H 0.0827 0 L 0.0083 L1 0.0160 E H NOTE: 1. THIS PART IS ...

Page 11

D A2 Patent Pending NOTE: 1. THIS PART IS COMPLIANT WITH EIAJ E1 SPECIFICATION SC-70 2. DIE IS FACE UP FOR MOLD. DIE ...

Page 12

N Updated VCC Transient Response text and Figure 2 10/30/2003 O Updated Power Up Reset Timeout vs. Temperature curve 3/10/2004 P Corrected temperature range Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics 03/23/2004 Q Updated ...

Page 13

Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ ™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For ...

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