CAT812TBI-T10 Datasheet PDF - Catalyst Semiconductor
| Part Number | CAT812TBI-T10 | |
| Description | 4-Pin Microprocessor Power Supply Supervisors | |
| Manufacturers | Catalyst Semiconductor | |
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CAT811, CAT812
4-Pin Microprocessor Power Supply Supervisors
FEATURES
ALOGEN FR
LEA D F REETM
s Precision monitoring of
+5.0 V (+/- 5%, +/- 10%, +/- 20%),
+3.3 V (+/- 5%, +/ 10%),
+3.0 V (+/- 10%) and
+2.5 V (+/- 5%) power supplies
s Offered in two output configurations:
- CAT811: Active LOW reset
- CAT812: Active HIGH reset
s Manual reset input
s Direct replacements for the MAX811 and
MAX812 in applications operating over the
industrial temperature range
s Reset valid down to VCC = 1.0 V
s 6 µA power supply current
s Power supply transient immunity
s Compact 4-pin SOT143 package
s Industrial temperature range: -40˚C to +85˚C
APPLICATIONS
s Computers
s Servers
s Laptops
s Cable modems
s Wireless communications
DESCRIPTION
The CAT811 and CAT812 are µP supervisory circuits
that monitor power supplies in digital systems. The
CAT811 and CAT812 are direct replacements for the
MAX811 and MAX812 in applications operating over the
industrial temperature range; both have a manual reset
input.
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, AE2(TM) used by Catalyst Semiconductor,
makes it possible to offer any custom reset threshold
value. Seven industry standard threshold levels are
THRESHOLD SUFFIX SELECTOR
Nominal Threshold
Voltage
4.63V
4.38V
4.00V
3.08V
2.93V
2.63V
2.32V
Threshold Suffix
Designation
L
M
J
T
S
R
Z
s Embedded control systems
s White goods
s Power meters
s Intelligent instruments
s PDAs and handheld equipment
offered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V
systems.
The CAT811 features a RESET push-pull output (active
LOW) and the CAT812 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 Vcc
levels as low as 1.0 V.
The CAT811/812 are fully specified over the industrial
temperature range (-40˚C to 85˚C) and are available in
a compact 4-pin SOT143 package.
PIN CONFIGURATION
GND 1
4 VCC
CAT811
(CAT812)
RESET
(RESET)
2
3
© 2004 by Catalyst Semiconductor, Inc., Patent Pending
Characteristics subject to change without notice
1
Doc. No. 3005, Rev. P
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CAT811, CAT812
ELECTRICAL CHARACTERISTICS (continued)
VCC = Full range, TA = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C and VCC = 5 V for
L/M/J versions, VCC = 3.3 V for T/S versions, VCC = 3 V for R version and VCC = 2.5 V for Z version.
Parameter
Symbol
Reset Threshold Tempco
VCC to Reset Delay (Note 2)
Reset Active Timeout Period
RESET Output Voltage Low
(Push-pull, active LOW,
CAT811)
VOL
RESET Output Voltage High
(Push-pull, active LOW,
CAT811)
VOH
RESET Output Voltage Low
(Push-pull, active HIGH,
CAT812)
VOL
Conditions
VCC = VTH to (VTH - 100 mV)
TA = -40˚C to +85˚C
VCC = VTH min, ISINK = 1.2 mA
CAT811R/S/T/Z
VCC = VTH min, ISINK = 3.2 mA
CAT811J/L/M
VCC > 1.0 V, ISINK = 50 µA
VCC = VTH max, ISOURCE = 500 µA
CAT811R/S/T/Z
VCC = VTH max, ISOURCE = 800 µA
CAT811J/L/M
VCC > VTH max, ISINK = 1.2 mA
CAT812R/S/T/Z
VCC > VTH max, ISINK = 3.2 mA
CAT812J/L/M
Min Typ(1) Max Units
30 ppm/˚C
20 µs
140 240 400 ms
0.3
0.8 VCC
VCC - 1.5
V
0.4
0.3
V
0.3
V
0.4
RESET Output Voltage High
(Push-pull active HIGH,
CAT812)
VOH
1.8 V < VCC ≤ VTH min, ISOURCE = 150 µA 0.8 VCC
V
MR Minimum Pulse Width
MR Glitch Immunity
MR to RESET Propagation
Delay
MR Input Threshold
MR Pull-up Resistance
tMR
Note 3
tMD Note 2
VIH VCC > VTH (MAX), CAT811/812L/M/J
VIL
VIH VCC > VIH (MAX), CAT811/812R/S/T/Z
VIL
10
100
µs
ns
0.5 µs
2.3 V
0.7VCC
0.8
V
0.25VCC
10 20 30 kΩ
Note 1: Production testing done at TA = +25˚C; limits over temperature guaranteed by design only.
Note 2: RESET output for the CAT811; RESET output for the CAT812
Note 3: Glitches of 100 ns or less typically will not generate a reset pulse.
Patent Pending
5 Doc. No. 3005, Rev. P
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for CAT812TBI-T10 electronic component. |
| Information | Total 11 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ CAT812TBI-T10.PDF Datasheet ] | |
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