TL3695

DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

5

POST OFFICE BOX 655303

DRIVER SECTION

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

temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

UNIT

VIK

Input clamp voltage

II = – 18 mA

– 1.5

V

VO

Output voltage

IO = 0

0

6

V

|VOD1|

Differential output voltage

IO = 0

1.5

5

V

RL = 100 Ω

See Figure 1

1/2 VOD1

V

|VOD2|

Differential output voltage

RL = 100 Ω,

See Figure 1

OD1

or 2§

V

RL = 54 Ω,

See Figure 1

1.5

2.5

5

V

VOD3

Differential output voltage

Vtest = – 7 V to 12 V,

See Figure 2

1.5

5

V

∆ |VOD|

Change in magnitude of differential output

voltage¶

±0.2

V

VOC

Common-mode output voltage

RL = 54 Ω,

See Figure 1

3

V

∆ |VOC|

Change in magnitude of common-mode

output voltage¶

±0.2

V

IO

Output current

Output disabled,

VO = 12 V

1

mA

IO

Output current

,

See Note 4

VO = – 7 V

– 0.8

mA

IIH

High-level input current

VI = 2.4 V

20

µA

IIL

Low-level input current

VI = 0.4 V

– 200

µA

#

VO = – 6 V

– 250

IOS

Short circuit output current#

VO = 0

– 150

mA

IOS

Short-circuit output current#

VO = VCC

250

mA

VO = 8 V

250

ICC

Supply current

No load

Outputs enabled

23

50

mA

ICC

Supply current

No load

Outputs disabled

19

35

mA

† The power-off measurement in TIA/EIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs.

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

§ The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater.

¶

∆ |VOD| and ∆ |VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low

level.

# Duration of the short circuit should not exceed one second for this test.

NOTE 4: This applies for power on and power off. Refer to TIA/EIA-485-A for exact conditions. The TIA/EIA-422-B limit does not apply for a

combined driver and receiver terminal.

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

temperature

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

UNIT

td(OD)

Differential-output delay time

8

22

ns

Skew (|td(ODH) – td(ODL)|)

CL1 = CL2 = 100 pF,

RL = 60 Ω,

See Figure 3

1

8

ns

tt(OD)

Differential output transition time

8

18

ns

tPZH

Output enable time to high level

CL = 100 pF,

RL = 500 Ω,

See Figure 4

50

ns

tPZL

Output enable time to low level

CL = 100 pF,

RL = 500 Ω,

See Figure 5

50

ns

tPHZ

Output disable time from high level

CL = 15 pF,

RL = 500 Ω,

See Figure 4

8

30

ns

tPLZ

Output disable time from low level

CL = 15 pF,

RL = 500 Ω,

See Figure 5

8

30

ns

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