LTC491C 查看數據表（PDF） - Linear Technology

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LTC491C

Differential Driver and Receiver Pair

Linear Technology 

LTC491

UW

W

SWITCHI G TI E WAVEFOR S

3V

D

0V

VO

–VO

Z

VO

Y

1.5V

tPLH

50%

80%

10%

tr

1/2 VO

tSKEW

f = 1MHz : tr ≤ 10ns : tf ≤ 10ns

VDIFF = V(Y) – V(Z)

Figure 5. Driver Propagation Delays

1.5V

tPHL

90%

50%

20%

tf

1/2 VO

tSKEW

LTC491 • F05

3V

DE

0V

5V

A, B

VOL

VOH

A, B

0V

VOD2

A-B

–VOD2

VOH

R

VOL

1.5V

tZL

2.3V

f = 1MHz : tr ≤ 10ns : tr ≤ 10ns

OUTPUT NORMALLY LOW

2.3V

tZH

OUTPUT NORMALLY HIGH

Figure 6. Driver Enable and Disable Times

0V

tPLH

1.5V

INPUT

f = 1MHz ; tr ≤ 10ns : tf ≤ 10ns

OUTPUT

Figure 7. Receiver Propagation Delays

1.5V

tLZ

0.5V

0.5V

tHZ

LTC491 • F06

0V

tPHL

1.5V

LTC491 • F07

3V

REB

0V

5V

R

VOL

VOH

R

0V

6

1.5V

tZL

1.5V

f = 1MHz : tr ≤ 10ns : tf ≤ 10ns

OUTPUT NORMALLY LOW

1.5V

tZH

OUTPUT NORMALLY HIGH

Figure 8. Receiver Enable and Disable Times

1.5V

tLZ

0.5V

0.5V

tHZ

LTC491 • F08

491fa

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