SN65ALS1176

DIFFERENTIAL BUS TRANSCEIVER

SLLS295A – APRIL 1998 – REVISED DECEMBER 1999

5

POST OFFICE BOX 655303

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature range

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

td(OD)

Differential output delay time

R54

Ω

C50 F

15

ns

tsk(p)

Pulse skew‡

RL = 54 Ω,

See Figure 3

CL = 50 pF,

0

2

ns

tt(OD)

Differential output transition time

See Figure 3

8

ns

tPZH

Output enable time to high level

RL = 110 Ω,

See Figure 4

CL = 50 pF,

80

ns

tPZL

Output enable time to low level

RL = 110 Ω,

See Figure 5

CL = 50 pF,

30

ns

tPHZ

Output disable time from high level

RL = 110 Ω,

See Figure 4

CL = 50 pF,

50

ns

tPLZ

Output disable time from low level

RL = 110 Ω,

See Figure 5

CL = 50 pF,

30

ns

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

‡ Pulse skew is defined as the |tPLH – tPHL| of each channel of the same device.

SYMBOL EQUIVALENTS

DATA-SHEET PARAMETER

TIA/EIA-422-B

TIA/EIA-485-A

VO

Voa, Vob

Voa, Vob

|VOD1|

Vo

Vo

|VOD2|

Vt (RL = 100 Ω)

Vt (RL = 54 Ω)

|VOD3|

None

Vt (test termination

measurement 2)

∆ |VOD|

||Vt| – |Vt||

||Vt| – |Vt||

VOC

|Vos|

|Vos|

∆ |VOC|

|Vos – Vos|

|Vos – Vos|

IOS

|Isa|, |Isb|

None

IO

|Ixa|, |Ixb|

Iia, Iib