TLK1521 datasheet(13/19 Pages) TI

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TLK1521

500 Mbps to 1.3 Gbps TRANSCEIVER

SLLS591A− OCTOBER 2003 − REVISED JANUARY 2004

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

transmitter/receiver characteristics

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

VOD(p)

VOD(p) = |VTXP-VTXN|,

Preemphasis VOD

DC-coupled. Preemphasis = high, See Figure 8

730

945

1280

VOD(pp−p)

Differential, peak to-peak output

voltage with preemphasis

DC-coupled. Preemphasis = high, See Figure 8

1460

1890

2560

VOD(d)

VD(d) = |VTXP-VTXN|,

De-emphasis VOD

DC-coupled. Preemphasis = low, See Figure 8

560

750

1100

VOD(pp−d)

Differential, peak-to-peak output

voltage with deemphasis

DC-coupled. Preemphasis = low, See Figure 8

1120

1500

2200

V(cmt)

Transmit termination voltage range,

(VTXP + VTXN)/2

1000

1250

1400

VID

Receiver input voltage differential

VID= |RXP – RXN|

200

Vcmr

Receiver common-mode voltage

range, (VRXP + VRXN)/2

1000

VDD−

350

Iin

Receiver input leakage

−10

µA

Cin

Receiver input capacitance

tr, tf

Differential output signal rise and

fall time (20% to 80%)

RL = 50 Ω, CL = 5 pF, See Figure 9

100

150

Serial transmit data total jitter

(peak-to-peak)

Differential output jitter, random + deterministic,

223−1 PRBS pattern at 1.3 Gbps

0.1

Receive jitter tolerance

Total input jitter, PRBS pattern, permitted eye

closure at zero crossing

0.5

Tlatency

TX latency

At 500 Mbps

Bit

Tlatency

TX latency

At 1.3 Gbps

Bit

times

Rlatency

RX latency

At 500 Mbps

Bit

Rlatency

RX latency

At 1.3 Gbps

Bit

times

VOD(d)

VOD(p)

V(cmt)

VOD(p)

VOD(d)

Bit

Time

Bit

Time

VOD(pp_p)

VOD(pp_d)

Figure 8. Differential and Common-Mode Output Voltage Definitions

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