S4261SS datasheet(4/16 Pages) SUMMIT

Part #	S4261SS

Description	Dual Voltage Supervisory Circuit With Watchdog Timer

PDF	16 Pages

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Manufacturer	SUMMIT [Summit Microelectronics, Inc.]

Direct Link	http://www.summitmicro.com

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4 / 16 page

S4242/S42WD42/S4261/S42WD61

2025 6.0 4/17/00

FIGURE 3. RESET OUTPUT TIMING

RESET CIRCUIT AC and DC ELECTRICAL CHARACTERISTICS

TA=-40°C to +85°C

Symbol

Parameter

Part no.

Min.

Typ.

Max.

Unit

Suffix

VTRIP

Reset Trip Point

A (or) Blank

4.250

4.375

4.5

4.50

4.625

4.75

2.7

2.9

3.10

tPURST

Reset Timeout

200

tRPD

VTRIP to RESET Output Delay

µs

VRVALID

RESET Output Valid to VCC min. Guarantee

tGLITCH

Glitch Reject Pulse Width note 1

VOLRS

RESET Output Low Voltage IOL = 1mA

0.4

VOHRS

RESET High Voltage Output IOH = 800µA

VCC-.75

VULH

VSENSE Under-voltage threshold low to high

1.20

1.25

1.30

VUHL

VSENSE Under-voltage threshold high to low

1.20

1.25

1.30

VOLH

VSENSE Over-voltage threshold low to high

1.20

1.25

1.30

VOHL

VSENSE Over-voltage threshold high to low

1.20

1.25

1.30

tVD1

Delay to VLOW Active

µs

tVD2

Delay to VLOW Released

µs

tWDTO

Watchdog timeout Period (S42WD61)

1600

(S42WD42)

2025 PGM T5.2

VCC

VRVALID

VTRIP

tPURST

RESET

2025 T fig03 2.0

tGLITCH

tRPD

tPURST

tRPD

RESET#

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