SP481REP datasheet(4/9 Pages) SIPEX

Teilenummer	SP481REP

Bauteilbeschribung	1/10th Unit Load RS-485 Transceiver

PDF	9 Pages

Scroll/Zoom	100%

Hersteller	SIPEX [Sipex Corporation]

Direct Link	http://www.sipex.com

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4 / 9 page

Date: 6/21/04

SP485R RS-485 Serial Transceiver

Figure 5. Driver Propagation Delays

Figure 3. Driver/Receiver Timing Test Circuit

Figure 4. Driver Timing Test Load #2 Circuit

Figure 1. Driver DC Test Load Circuit

Figure 2. Receiver Timing Test Load Circuit

CL1

15pF

CL2

VOD

VOC

500Ω

Output

Under

Test

VCC

1kΩ

CRL

Receiver

Output

Test Point

VCC

TEST CIRCUITS

SWITCHING WAVEFORMS

+3V

DRIVER

OUTPUT

VO+

DIFFERENTIAL

OUTPUT

VA – V

– VB

VO–

1.5V

tPLH

PLH

f = 1MHz; t

f = 1MHz; tR < 10ns; t

< 10ns; tF < 10ns

< 10ns

1/2V

1/2VO

1/2V

1/2VO

tPHL

PHL

tSKEW

SKEW = |

= | tDPLH

DPLH - tDPHL

DPHL |

tDPLH

DPLH

tDPHL

DPHL

tPLH

PLH

SP481REP Datenblatt(PDF) 4 Page - Sipex Corporation

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