DG221B datasheet(4/10 Pages) VISHAY

Part #	DG221B

Description	Quad SPST CMOS Analog Switch with Latches

PDF	10 Pages

Scroll/Zoom	100%

Manufacturer	VISHAY [Vishay Siliconix]

Direct Link	http://www.vishay.com

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4 / 10 page

www.vishay.com

Document Number: 71616

S-80263-Rev. B, 11-Feb-08

Vishay Siliconix

DG221B

TEST CIRCUITS

Figure 2. Switching Time

V-

tr < 10 ns

tf < 10 ns

50 %

0 V

3 V

tOFF

tON

90 %

Logic

Input

Switch

Input

Switch

Output

CL (includes fixture and stray capacitance)

V+

RL + rDS(on)

VO = VS

- 15 V

GND

2 V

35 pF

1 k

+ 15 V

Figure 3. WR Switching Time

CL (includes fixture and stray capacitance)

V+

RL + rDS(on)

VO = VS

- 15 V

GND

2 V

35 pF

V-

1 k

+ 15 V

0 V

tr < 10 ns

tf < 10 ns

0 V

3 V

tOFF , WR

tON, WR

90 %

50 %

0 V

3 V

VOUT

Figure 4. WR Setup Conditions

tH = Hold Time

tS = Setup Time

tW = WR Pulse Width

3 V

VOUT

50 %

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