MAX4853 Просмотр технического описания (PDF) - Maxim Integrated

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MAX4853

3.5Ω/7Ω Quad SPST Switches with Over-Rail Signal Handling

Maxim Integrated 

3.5Ω/7Ω Quad SPST Switches with Over-Rail

Signal Handling

Test Circuits/Timing Diagrams

MAX4851_

MAX4853_

VNO

VCC

VCC

NO_

LOGIC

INPUT

IN_

GND

COM_

RL

VOUT

CL

CL INCLUDES FIXTURE AND STRAY CAPACITANCE.

( ) VOUT = VNO

RL

RL + RON

LOGIC VCC

INPUT

0V

SWITCH VOUT

OUTPUT 0V

tR < 20ns

tF < 20ns

50%

tOFF

0.9 x V0UT 0.9 x VOUT

tON

SWITCH

INPUT

VCC + 0.5V

VCC

tHIZB

HIGH-Z MODE

tHIZ

NORMAL MODE

NORMAL MODE

IN DEPENDS ON SWITCH CONFIGURATION;

INPUT POLARITY DETERMINED BY SENSE OF SWITCH.

Figure 1. Switching Time

tri

90%

50%

TxD+

A

B

INPUT A

10%

Rs

CL

tskew_i

INPUT A-

90%

50%

10%

tfi

A-

TxD-

Rs

Rs = 39Ω

CL = 50pF

B-

CL

OUTPUT B

OUTPUT B-

tro

90%

50%

10%

tskew_o

90%

50%

10%

tfo

Figure 2. Input/Output Skew Timing Diagram

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