SN65LBC170, SN75LBC170

TRIPLE DIFFERENTIAL TRANSCEIVERS

SLLS459C − NOVEMBER 2000 − REVISED MARCH 2005

5

POST OFFICE BOX 655303

RECEIVER SECTION

electrical characteristics over recommended operating conditions

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIT+

Positive-going differential input voltage threshold

0.2

V

VIT−

Negative-going differential input voltage threshold

See Figure 8

−0.2

V

Vhys

Hysteresis voltage (VIT+ − VIT−)

See Figure 8

40

mV

VOH

High-level output voltage

VID = 200 mV, IOH = −8 mA, See Figure 8

4

4.7

VCC

V

VOL

Low-level output voltage

VID = −200 mV, IOL = −8 mA, See Figure 8

0

0.2

0.4

V

II

Line input current

Other input = 0 V

VI = 12 V

0.9

mA

II

Line input current

Other input = 0 V

VI = −7 V

−0.7

mA

RI

Input resistance

A, B

12

k

Ω

ICC

Supply current (receiver enabled)

A, B, D, and DIR open

16

mA

† All typical values are at VCC = 5 V and TA = 25°C.

switching characteristics over recommended operating conditions

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH

Propagation delay time, low-to-high level output

7

16

ns

tPHL

Propagation delay time, high-to-low level output

See Figure 9

7

16

ns

tr

Receiver output rise time

See Figure 9

1.3

3

ns

tf

Receiver output fall time

1.3

3

ns

tPZH

Receiver output enable time to high level

See Figure 10

26

40

ns

tPHZ

Receiver output disable time from high level

See Figure 10

40

ns

tPZL

Receiver output enable time to low level

See Figure 11

29

40

ns

tPLZ

Receiver output enable time to high level

See Figure 11

40

ns

tsk(p)

Pulse skew (| tPLH – tPHL |)

2

ns

tsk(o)

Output skew‡

1.5

ns

tsk(pp)

Part-to-part skew§

3

ns

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

§ Part-to-part skew (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 input signals, the same supply voltages, at the same temperature, and have identical packages and test

circuits.