SN55LBC976

9-CHANNEL DIFFERENTIAL TRANSCEIVER

SGLS091A – JUNE 1995 – REVISED JANUARY 1997

5

POST OFFICE BOX 655303

receiver electrical characteristics over recommended ranges of operating conditions (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VOH

High-level output voltage

VID = 200 mV,

See Figure 3

IOH = – 8 mA,

2.5

V

VOL

Low-level output voltage

VID = – 200 mV,

See Figure 3

IOL = 8 mA,

0.8

V

‡

IOH = – 8 mA,

See Figure 3

0.2

VIT +

Positive-going input threshold voltage‡

IOH = – 8 mA,

See Figure 3

TA = – 55°C,

0.5

V

VIT –

Negative-going input threshold voltage

IOL = 8 mA,

See Figure 3

– 0.2

V

Vhys

Receiver input hysteresis ( VIT + – VIT – )

45

mV

VI = 12 V,

Other input at 0 V,

VCC = 5 V,

See Figure 3

0.7

1.5

mA

II

Receiver input current

B+ and B

VI = 12 V,

Other input at 0 V,

VCC = 0 V,

See Figure 3

0.8

1.5

mA

II

Receiver input current

B+ and B –

VI = – 7 V,

Other input at 0 V,

VCC = 5 V,

See Figure 3

– 0.5

–1

mA

VI = – 7 V,

Other input at 0 V,

VCC = 0 V,

See Figure 3

– 0.4

–1

mA

IOZ

High-impedance-state output current

See Figure 3

VO = GND

– 200

µA

IOZ

High-im edance-state out ut current

See Figure 3

VO = VCC

50

µA

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

‡ This parameter is not tested to meet RS-485 or SCSI standards at –55

°C.

driver switching characteristics over recommended operating conditions (unless otherwise

noted) (see Figure 4)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

tdD

Differential delay time, high-to-low-level output (tdDH) or

4

30

ns

tdD

y,

g

( dDH)

low-to-high-level output (tdDL )

VCC = 5 V,

TA = 25°C

9

17

ns

t k(li )

Skew limit, the maximum difference in propagation delay times

12

ns

tsk(lim)

,g

y

between any two drivers on any two devices

VCC = 5 V,

See Note 2

8

ns

tsk(p)

Pulse skew ( | tdDL – tdDH |)

6

ns

tt

Transition time (tr or tf)

10

ns

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

NOTE 2: This specification applies to any 5

°C band within the operating temperature range.