S4242/S42WD42/S4261/S42WD61
t
GLITCH
V
TRIP
V
CC
V
RVALID
t
RPD
t
PURST
t
PURST
RESET#
RESET
t
RPD
2025 T fig03 2.0
FIGURE 3. RESET OUTPUT TIMING
RESET CIRCUIT AC and DC ELECTRICAL CHARACTERISTICS
T =-40°C to +85°C
A
Symbol
Parameter
Part no.
Suffix
Min.
Typ.
Max.
Unit
VTRIP
Reset Trip Point
A (or) Blank
4.250
4.50
2.7
4.375
4.625
2.9
4.5
V
V
B
4.75
3.10
2.7
V
tPURST
tRPD
Reset Timeout
200
ms
µs
V
VTRIP to RESET Output Delay
5
VRVALID
tGLITCH
VOLRS
VOHRS
VULH
RESET Output Valid to VCC min. Guarantee
Glitch Reject Pulse Width note 1
RESET Output Low Voltage IOL = 1mA
RESET High Voltage Output IOH = 800µA
VSENSE Under-voltage threshold low to high
VSENSE Under-voltage threshold high to low
VSENSE Over-voltage threshold low to high
VSENSE Over-voltage threshold high to low
Delay to VLOW Active
1
30
ns
V
0.4
VCC-.75
1.20
V
1.25
1.25
1.25
1.25
1.30
1.30
1.30
1.30
5
V
VUHL
1.20
V
VOLH
VOHL
tVD1
1.20
V
1.20
V
µs
µs
ms
tVD2
Delay to VLOW Released
5
tWDTO
Watchdog timeout Period (S42WD61)
(S42WD42)
1600
2025 PGM T5.2
2025 6.0 4/17/00
4
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
