SN55LVDS31, SN65LVDS31, SN65LVDS3487, SN65LVDS9638

HIGHSPEED DIFFERENTIAL LINE DRIVERS

SLLS261K − JULY 1997 − REVISED MARCH 2004

7

POST OFFICE BOX 655303

SN65LVDSxxxx switching characteristics over recommended operating conditions (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

SN65LVDS31

SN65LVDS3487

SN65LVDS9638

UNIT

MIN

TYP†

MAX

tPLH

Propagation delay time, low-to-high-level output

0.5

1.4

2

ns

tPHL

Propagation delay time, high-to-low-level output

1

1.7

2.5

ns

tr

Differential output signal rise time (20% to 80%)

RL = 100 Ω, CL = 10 pF,

0.4

0.5

0.6

ns

tf

Differential output signal fall time (80% to 20%)

RL = 100 Ω, CL = 10 pF,

See Figure 2

0.4

0.5

0.6

ns

tsk(p)

Pulse skew (|tPHL − tPLH|)

See Figure 2

0.3

0.6

ns

tsk(o)

Channel-to-channel output skew‡

0

0.3

ns

tsk(pp)

Part-to-part skew§

800

ps

tPZH

Propagation delay time, high-impedance-to-high-level output

5.4

15

ns

tPZL

Propagation delay time, high-impedance-to-low-level output

See Figure 4

2.5

15

ns

tPHZ

Propagation delay time, high-level-to-high-impedance output

See Figure 4

8.1

15

ns

tPLZ

Propagation delay time, low-level-to-high-impedance output

7.3

15

ns

† All typical values are at TA = 25°C and with VCC = 3.3 V.

‡ tsk(o) is the skew between specified outputs of a single device with all driving inputs connected together and the outputs switching in the same

direction while driving identical specified loads.

§ tsk(pp) is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both devices operate

with the same supply voltages, same temperature, and have identical packages and test circuits.