DS90LV049_15 datasheet(5/19 Pages) TI1

Part #	DS90LV049

Description	3V LVDS Dual Line Driver with Dual Line Receiver

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DS90LV049

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SNLS159D – NOVEMBER 2002 – REVISED APRIL 2013

SWITCHING CHARACTERISTICS

VDD = +3.3V ± 10%, TA = −40°C to +85°C

(1) (2)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

LVDS Outputs (Driver Outputs)

tPHLD

Differential Propagation Delay High to Low

0.7

2

ns

tPLHD

Differential Propagation Delay Low to High

0.7

2

ns

tSKD1

Differential Pulse Skew |tPHLD − tPLHD|

(3) (4)

0

0.05

0.4

ns

RL = 100 Ω

tSKD2

Differential Channel-to-Channel Skew(3)(5)

0

0.05

0.5

ns

(Figure 2 and Figure 3)

tSKD3

Differential Part-to-Part Skew(3)(6)

0

1.0

ns

tTLH

Rise Time(3)

0.2

0.4

1

ns

tTHL

Fall Time(3)

0.2

0.4

1

ns

tPHZ

Disable Time High to Z

1.5

3

ns

tPLZ

Disable Time Low to Z

1.5

3

ns

RL = 100 Ω

(Figure 4 and Figure 5)

tPZH

Enable Time Z to High

1

3

6

ns

tPZL

Enable Time Z to Low

1

3

6

ns

fMAX

Maximum Operating Frequency(7)

200

250

MHz

LVCMOS Outputs (Receiver Outputs)

tPHL

Propagation Delay High to Low

0.5

2

3.5

ns

tPLH

Propagation Delay Low to High

0.5

2

3.5

ns

tSK1

Pulse Skew |tPHL − tPLH|

(8)

0

0.05

0.4

ns

tSK2

Channel-to-Channel Skew(9)

(Figure 6 and Figure 7)

0

0.05

0.5

ns

tSK3

Part-to-Part Skew(10)

0

1.0

ns

tTLH

Rise Time(3)

0.3

0.9

1.4

ns

tTHL

Fall Time(3)

0.3

0.75

1.4

ns

tPHZ

Disable Time High to Z

3

5.6

8

ns

tPLZ

Disable Time Low to Z

3

5.4

8

ns

(Figure 8 and Figure 9)

tPZH

Enable Time Z to High

2.5

4.6

7

ns

tPZL

Enable Time Z to Low

2.5

4.6

7

ns

fMAX

Maximum Operating Frequency(11)

200

250

MHz

(1)

All typical values are given for: VDD = +3.3 V, TA = +25°C.

(2)

Generator waveform for all tests unless otherwise specified: f = 1 MHz, ZO = 50 Ω, tr ≤ 1 ns, and tf ≤ 1 ns.

(3)

These parameters are specified by design. The limits are based on statistical analysis of the device performance over PVT (process,

voltage, temperature) ranges.

(4)

tSKD1 or differential pulse skew is defined as |tPHLD − tPLHD|. It is the magnitude difference in the differential propagation delays between

the positive going edge and the negative going edge of the same driver channel.

(5)

tSKD2 or differential channel-to-channel skew is defined as the magnitude difference in the differential propagation delays between two

driver channels on the same device.

(6)

tSKD3 or differential part-to-part skew is defined as |tPLHD Max − tPLHD Min| or |tPHLD Max − tPHLD Min|. It is the difference between the

minimum and maximum specified differential propagation delays. This specification applies to devices at the same VDD and within 5°C of

each other within the operating temperature range.

(7)

fMAX generator input conditions: tr = tf < 1 ns (0% to 100%), 50% duty cycle, 0 V to 3 V. Output Criteria: duty cycle = 45%/55%, VOD >

250 mV, all channels switching.

(8)

tSK1 or pulse skew is defined as |tPHL − tPLH|. It is the magnitude difference in the propagation delays between the positive going edge

and the negative going edge of the same receiver channel.

(9)

tSK2 or channel-to-channel skew is defined as the magnitude difference in the propagation delays between two receiver channels on the

same device.

(10) tSK3 or part-to-part skew is defined as |tPLH Max − tPLH Min| or |tPHL Max − tPHL Min|. It is the difference between the minimum and maximum

specified propagation delays. This specification applies to devices at the same VDD and within 5°C of each other within the operating

temperature range.

(11) fMAX generator input conditions: tr = tf < 1 ns (0% to 100%), 50% duty cycle, VID = 200 mV, VCM = 1.2 V . Output Criteria: duty cycle =

45%/55%, VOH > 2.7 V, VOL < 0.25 V, all channels switching.

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