TC1270A MICROCHIP [Microchip Technology], TC1270A Datasheet - Page 5

• Manufacturer Part Number: TC1270A
• Description: Voltage Supervisor with Manual Reset Input
• Manufacturer: MICROCHIP [Microchip Technology]

1.1.2
FIGURE 1-2:
FIGURE 1-3:
TABLE 1-1:
© 2007 Microchip Technology Inc.
Electrical Characteristics: Unless otherwise noted, V
V
V
Reset Active
Timeout
Period
MR Minimum Pulse Width
MR Noise Immunity
MR to Reset Propagation Delay
Note 1:
V
Note 1:
DD
DD
DD
V
RST
RST
to Reset Delay
DD
= 3V for R version, T
< 1V is outside the device operating specification. The RST (or RST) output state is unknown while V
2:
3:
(1)
TIMING DIAGRAMS AND SPECIFICATIONS
MR
RST
RST
Unless otherwise stated, data in the Typical (“Typ”) column is at 5V, +25°C.
RST output for TC1270A, RST output for TC1271A.
TC127XA refers to either the TC1270A, TC1270AN or TC1271A device. “x” indicated the selected Voltage
Trip Point, while “yy” indicates the package code.
V
The TC1270AN requires an external pull-up resistor.
1V
TRIP(MIN)
Parameter
TC127XAxBVyy
TC127XAxCVyy
TC127XAxVyy
V
RESET AND DEVICE RESET TIMER REQUIREMENTS
TRIP
MR PIN AND RESET PIN WAVEFORM
DEVICE VOLTAGE AND RESET PIN (ACTIVE LOW) WAVEFORM
A
= -40°C to +125°C. Typical values are at T
V
TRIP(MAX)
(3)
(3)
(3)
t
t
RST
MRNI
t
Sym
t
MRNI
t
t
t
RST
MR
MD
RD
t
MR
t
MD
1.09
17.5
Min
140
10
—
—
—
DD
= 5V for L/M versions, V
t
RST
Typ
2.19
280
0.1
0.2
50
35
—
(1)
TC1270A/70AN/71A
A
Max
4.38
560
= +25°C.
70
—
—
—
—
t
RD
Units
ms
ms
ms
µs
µs
µs
µs
DD
= 3.3V for T/S versions,
V
V
V
V
V
DD
TRIP(MIN)
DD
DD
DD
= V
= V
= V
= V
Test Conditions
TRIP(MAX)
TRIP(MAX)
TRIP(MAX)
TRIP(MAX)
–125 mV
DS22035B-page 5
t
RST
to
DD
< 1V.