HI-4854CRH datasheet(5/14 Pages) HOLTIC

Part #	HI-4854CRH

Description	3.3/5V, High-Speed RS-485/422 Transceivers with

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Manufacturer	HOLTIC [Holt Integrated Circuits]

Direct Link	http://www.holtic.com

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5 / 14 page

HI-4853H

TEST CIRCUITS

54Ω

50pF

DI

BZ

AY

TX

Figure 3 - Driver DC Characteristics ( VOD1, VOD2, and ∆V

OD)

DE

|VOD|

+

-

50pF

DI

BZ

AY

TX

Figure 4 - Driver DC Characteristics with and without Common-Mode Loading ( VOCM, VOD3, and ∆V

OD)

DE

|VOD3|

+

-

27Ω

VOCM

DI

BZ

AY

TX

DE

|VOD3|

+

-

375Ω

60Ω

HOLT INTEGRATED CIRCUITS

5

Figure 6. Driver Switching Waveforms

DI

V

=

V(AY) - V(BZ)

OD

BZ

AY

VDD

0V

VO

-VO

VO

1/2VO

1.5V

t PDR

t PDF

1/2VO

tMSK

t r

t f

90%

10%

50pF

DI

BZ

AY

TX

DE

54Ω

Figure 5 - Driver Switching Characteristics (tPDR, tPDF, tr and tf)

1Mpbs

12Mbps

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HI-4854CRH Datasheet(PDF) 5 Page - Holt Integrated Circuits

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