S4242/S42WD42/S4261/S42WD61
tGLITCH
VCC
VTRIP
VRVALID
tPURST
tRPD
tPURST
RESET#
tRPD
RESET
FIGURE 3. RESET OUTPUT TIMING
2025 T fig03 2.0
RESET CIRCUIT AC and DC ELECTRICAL CHARACTERISTICS
TA=-40°C to +85°C
Symbol
V
TRIP
Parameter
Reset Trip Point
Part no.
Suffix
A (or) Blank
B
2.7
Min.
4.250
4.50
2.7
Typ.
4.375
4.625
2.9
200
Max.
4.5
4.75
3.10
5
1
30
0.4
V
CC
-.75
1.20
1.20
1.20
1.20
1.25
1.25
1.25
1.25
1.30
1.30
1.30
1.30
5
5
1600
Unit
V
V
V
ms
µs
V
ns
V
V
V
V
V
V
µs
µs
ms
2025 PGM T5.2
t
PURST
t
RPD
V
RVALID
t
GLITCH
V
OLRS
V
OHRS
V
ULH
V
UHL
V
OLH
V
OHL
t
VD1
t
VD2
t
WDTO
Reset Timeout
V
TRIP
to RESET Output Delay
RESET Output Valid to V
CC
min. Guarantee
Glitch Reject Pulse Width note 1
RESET Output Low Voltage I
OL
= 1mA
RESET High Voltage Output I
OH
= 800µA
V
SENSE
Under-voltage threshold low to high
V
SENSE
Under-voltage threshold high to low
V
SENSE
Over-voltage threshold low to high
V
SENSE
Over-voltage threshold high to low
Delay to V
LOW
Active
Delay to V
LOW
Released
Watchdog timeout Period (S42WD61)
(S42WD42)
2025 6.0 4/17/00
4
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
