TL3695

DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

6

POST OFFICE BOX 655303

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|

Vt (test termination

measurement 2)

Vtest

Vtst

∆ |VOD|

| |Vt| – |Vt| |

| |Vt| – |Vt| |

VOC

|Vos|

|Vos|

∆ |VOC|

| Vos – Vos |

| Vos – Vos |

IOS

| Isa |, | Isb |

IO

| Ixa |, | Ixb |

Iia, Iib

RECEIVER SECTION

electrical characteristics over recommended ranges of common-mode input voltage, supply

voltage, and operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIT+

Positive-going input threshold voltage

VO = 2.7 V,

IO = – 0.4 mA

0.2

V

VIT–

Negative-going input threshold voltage

VO = 0.5 V,

IO = 8 mA

– 0.2‡

V

Vhys

Hysteresis voltage (VIT+–VIT–)

VOC = 0

70

mV

VIK

Enable-input clamp voltage

II = – 18 mA

– 1.5

V

VOH

High level output voltage

VID = 200 mV or inputs open,

24

V

VOH

High-level output voltage

ID

,

IOH = – 400 µA,

See Figure 6

2.4

V

VOL

Low level output voltage

VID = – 200 mV,

IOL = 16 mA

0.5

V

VOL

Low-level output voltage

ID

,

See Figure 6

IOL = 8 mA

0.45

V

IOZ

High-impedance-state output current

VO = 0.4 V to 2.4 V

±20

µA

II

Line input current

Other input = 0,

VI = 12 V

1

mA

II

Line input current

,

See Note 5

VI = – 7 V

– 0.8

mA

IIH

High-level enable-input current

VIH = 2.7 V

20

µA

IIL

Low-level enable-input current

VIL = 0.4 V

– 100

µA

rI

Input resistance

12

k

Ω

IOS

Short-circuit output current§

VO = 0

–15

–85

mA

ICC

Supply current

No load

Outputs enabled

23

50

mA

ICC

Supply current

No load

Outputs disabled

19

35

mA

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

‡ The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode

input voltage and threshold voltage levels only.

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

NOTE 5: This applies for power on and power off. Refer to TIA/EIA-485-A for exact conditions.