LTC1323CS datasheet(7/12 Pages) LINER

7 / 12 page

LTC1323

TXO: Single-Ended Driver Output.

TXD+: Differential Driver Noninverting Output.

TXD–: Differential Driver Inverting Output.

VEE: Negative Supply Charge Pump Output. Requires a

µF bypass capacitor to ground. If an external load is

connected to the VEE pin, the bypass capacitor value

should be increased to 4.7

µF.

PI FU CTIO S

C2–: C2 Negative Input. Connect a 0.33

µF capacitor

between C2+ and C2 –.

C2+: C2 Positive Input. Connect a 0.33

µF capacitor

between C2+ and C2–.

VCC: Positive Supply Input. 4.5V ≤ VCC ≤ 5.5V. Requires a

µF bypass capacitor to ground.

TEST CIRCUITS

VOD

TXD+

TXD–

LTC1323 • F01

VOC

LTC1323 • F02

RXD+

TXD–

RXD+

RXD–

RXDO

15pF

TXI

Figure 1

Figure 2

Figure 3

LTC1323 • F03

TXD–

TXD+

TXI

OUTPUT

500

Ω

LTC1323 • F04

VCC

LTC1323 • F06

RXO

RXI

RXO

RXI

LTC1323 • F05

TXO

TXI

Figure 4

Figure 5

Figure 6

SWITCHI G WAVEFOR S

1.5V

TXD

f = 1MHz: tr ≤ 10ns: tf ≤ 10ns

1.5V

–VO

tSKEW

1/2 VO

LTC1323 • F07

tPLH

90%

50%

10%

tPHL

90%

50%

10%

tSKEW

VDIFF = V(TXD

+) – V(TXD–)

TXD–

TXD+

Figure 7. Differential Driver

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