SN75LVDS179, SN75LVDS180, SN75LVDS050, SN75LVDS051

HIGH-SPEED DIFFERENTIAL LINE DRIVERS AND RECEIVERS

SLLS361A – JUNE 1999 – REVISED MARCH 2000

7

POST OFFICE BOX 655303

receiver switching characteristics over recommended operating conditions (unless otherwise

noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

tPLH

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

2.1

6

ns

tPHL

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

2.1

6

ns

tr

Output signal rise time

C10 F

0.6

1.5

ns

tf

Output signal fall time

CL = 10 pF,

See Figure 6

0.7

1.5

ns

tsk(p)

Pulse skew (|tpHL – tpLH|)‡

See Figure 6

0.6

ns

tsk(o)

Channel-to-channel output skew§

0.6

ns

tsk(pp)

Part-to-part skew¶

1

ns

tPZH

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

25

ns

tPZL

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

See Figure 7

25

ns

tPHZ

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

See Figure 7

25

ns

tPLZ

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

25

ns

† All typical values are at 25

°C and with a 3.3-V supply.

‡ tsk(p) is the magnitude of the time difference between the high-to-low and low-to-high propagation delay times at an output

‡ tsk(o) is the magnitude of the time difference between the outputs of a single device with all of their inputs connected together.

‡ tsk(o) 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.

PARAMETER MEASUREMENT INFORMATION

driver

VOD

VOZ

VOY

VOC

VI

IOY

IOZ

II

A

Z

Y

V

OY )

V

OZ

2

Driver Enable

Figure 1. Driver Voltage and Current Definitions