SP505ACF datasheet(13/35 Pages) SIPEX

13 / 35 page

Rev: A Date: 1/27/04

SP505 Multi–Mode Serial Transceiver

Figure 34. Driver Timing Test Load Circuit

Figure 35. Receiver Timing Test Load Circuit

500Ω

Output

Under

Test

VCC

1KΩ

CRL

Receiver

Output

Test Point

VCC

Figure 36. Driver Propagation Delays

Figure 37. Driver Enable and Disable Times

+3V

DECX

VOL

A, B

1.5V

tZL

tZH

f = 1MHz; tR ≤ 10ns; tF ≤ 10ns

VOH

A, B

2.3V

tLZ

tHZ

0.5V

Output normally LOW

Output normally HIGH

ENABLE

Figure 38. Receiver Propagation Delays

+3V

DRIVER

INPUT

DRIVER

OUTPUT

VO+

DIFFERENTIAL

OUTPUT

VA – VB

VO–

1.5V

tPLH

f > 5MHz; tR < 10ns; tF < 10ns

1/2VO

tPHL

tDPLH

tDPHL

tSKEW = | tDPLH - tDPHL |

VOH

VOL

RECEIVER OUT

(VOH - VOL)/2

tPLH

f > 5MHz; tR < 10ns; tF < 10ns

OUTPUT

V0D2+

V0D2–

A – B

tPHL

INPUT

SKEW

= | tPHL - tPLH |

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