TC1270A/70AN/71A
Voltage Supervisor with Manual Reset Input
Features:
• Precision voltage monitor
- 2.63V, 2.93V, 3.08V, 4.38V and 4.63V trip
points (Typical)
• Manual Reset input
• Reset Time-out Delay:
- Standard: 280 ms (Typical)
- Optional: 2.19 ms, and 35 ms (Typical)
• Power Consumption
≤
15 µA max
• No glitches on outputs during power-up
• Active Low Output Options:
- Push-Pull Output and Open-Drain Output
• Active High Output Option:
- Push-Pull Output
• Replacement for (Specification compatible with):
- TC1270, TC1271
- TCM811, TCM812
• Fully static design
• Low voltage operation (1.0V)
• ESD protection:
-
≥
4 kV Human Body Model (HBM)
-
≥
400V Machine Model (MM)
• Extended (E) Temperature range:
-40°C to +125°C
• Package Options:
- 4-lead SOT-143
- 5-lead SOT-23
- Pb-free Device
Package Types
SOT-143
V
SS
1
4
V
DD
V
SS
TC1270A
SOT-143
1
4
V
DD
TC1271A
RST
2
3
MR
RST
2
3
MR
SOT-23-5
NC
V
DD
MR
1
2
3
5
V
SS
NC
V
DD
4
RST
MR
TC1270A
TC1270AN
SOT-23-5
1
2
3
5
V
SS
TC1271A
4
RST
Functional Block Diagram
V
DD
Voltage
Detector
Circuitry
Reset
Generator
& Delay
Timer
(2.19 ms,
35 ms,
280 ms)
RST
(TC1271A)
RST
PP
(TC1270A)
RST
OD
(TC1270AN)
PP
Output
Driver
Comment
DS22035B-page 1
18.5 kΩ
MR
Glitch Filter
Device Features
Reset Delay
(ms) (Typ)
(3)
Reset Trip
Point (V)
(3)
Voltage
Range (V)
Output
Device
Type
TC1270A
Push-Pull
Active
Level
Low
Low
High
2.19,
35,
280
(1)
4.63, 4.38,
3.08, 2.93,
2.63
(4)
1.0V
to
5.5V
Temperature
Range
Packages
TC1270AN Open-Drain
TC1271A
Note 1:
2:
3:
4:
Push-Pull
-40°C
SOT-23-5 New Option
to
+125°C SOT-143
(2)
, Replaces TC1271 and
SOT-23-5 TCM812
SOT-143
(2)
, Replaces TC1270 and
SOT-23-5 TCM811
The 280 ms Reset Delay time-out is compatible with the TC1270, TC1271, TCM811, and TCM812
devices.
The SOT-143 package is compatible with the TC1270, TC1271, TCM811, and TCM812 devices.
Custom Reset Trip Points and Reset Delays available, contact factory.
The TC1270/1 and TCM811/12 1.75V Trip Point Option is not supported.
©
2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
