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Pericom Semiconductor Corporation

PT7M1233A Datasheet Preview

PT7M1233A Datasheet

Supervisory Circuit

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Features
High accurate: 1.5% (25°C)
Operating voltage range: 1.0V ~ 5.5V
Operating temperature range: -40°C to + 85°C
Detect voltage temperature characteristics: 2.5%
TYP
Output configuration: Bi-dir
Reset timeout period: typical 200ms
Pin Configuration
PT7M1233/1233A
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Supervisory Circuit
Description
The PT7M1233/1233A series are designed to monitor
power supplies in µP and digital systems. They
provide excellent circuit reliability and low cost by
eliminating external components and adjustments.
The devices perform a single function: assert a reset
signal whenever the VCC supply voltage falls below a
preset threshold. Reset remains asserted 200ms after
VCC has risen above the reset threshold.
PT7M1233/1233A are bidirectional output, allowing it
to monitor a pushbutton on the reset output.
Pin Description
Name Type
Description
RST
I/O
Reset Output and Pushbutton Input: RST is asserted when VCC drops below voltage threshold VTH-. Active
low. When other devices pull RST low, the reset condition occurs and will remain a reset timeout period at
least 200ms.
GND P Ground
VCC P Supply Voltage.
2013-06-0001
PT0195-4 06/17/13
1




Pericom Semiconductor Corporation

PT7M1233A Datasheet Preview

PT7M1233A Datasheet

Supervisory Circuit

No Preview Available !

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Maximum Ratings
PT7M1233/1233A
Supervisory Circuit
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Storage Temperature ............................................................-65oC to +150oC
Ambient Temperature with Power Applied .......................... -40oC to +85oC
Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +7.0V
DC Input Voltage (All inputs except Vcc and GND)......-0.3V to VCC+0.3V
DC Output Current (All outputs) ..........................................................30mA
Power Dissipation .......................................... 320mW (Depend on package)
DC Electrical Characteristics
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions above those indicated in the operational sec-
tions of this specification is not implied. Exposure
to absolute maximum rating conditions for extended
periods may affect reliability.
(TA= -40~85ºC, unless otherwise noted. Typical values are at TA = +25ºC)
Description
Sym.
Test Conditions
Min Typ Max Unit
Supply Voltage
Supply Current
Voltage Threshold
Voltage Threshold
(PT7M1233A-10)
Voltage Threshold
(PT7M1233A-15)
Hysteresis
VCC
ICC
VTH-
VTH-
VTH-
VHYS
VCC = 5.5V. No load.
VCC = 3.6V. No load.
+25C
-40C~85C
+25C
-40C~85C
+25C
-40C~85C
VTH+ - VTH-*
1.0
-
-
(VTH-)
0.985
(VTH-)
0.975
(VTH-)
0.985
(VTH-)
0.975
(VTH-)
0.985
(VTH-)
0.975
-
-
-
-
VTH-
VTH-
2.88
2.88
2.72
2.72
50
5.5
12
10
(VTH-)
1.015
(VTH-)
1.025
(VTH-)
1.015
(VTH-)
1.025
(VTH-)
1.015
(VTH-)
1.025
-
V
µA
µA
V
V
V
V
V
V
mV
Output
Driving
Output low
IOH = 8mA, VCC = 5V
VOL IOH = 4mA, VCC = 3V
IOH = -50µA, VCC = 1V
- - 0.4
- - 0.3
- - 0.09
Note: VTH- is voltage threshold when VCC falls from high to low. VTH+ is voltage threshold when VCC rises from low to high.
V
2013-06-0001
PT0195-4 06/17/13
2


Part Number PT7M1233A
Description Supervisory Circuit
Maker Pericom Semiconductor Corporation
Total Page 7 Pages
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