Texas Instruments TL3695P, TL3695DR, TL3695D Datasheet

TL3695

DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

Bidirectional Transceiver

D

Meets or Exceeds the Requirements of
TIA/EIA-422-B, TIA/EIA-485-A, and ITU
Recommendation V.11

D

High-Speed Advanced Low-Power Schottky
Circuitry

D

Low Skew ...6 ns Max

D

Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments

D

Low Supply-Current Requirements . . .

30 mA Max

D

Wide Positive and Negative Input/Output
Bus-Voltage Ranges

D

Driver Output Capacity . . . ±60 mA

D

Thermal-Shutdown Protection

D

Driver Positive and Negative Current
Limiting

D

Receiver Input Impedances . . . 12 kΩ Min

D

Receiver Input Sensitivity . . . ±200 mV Max

D

Receiver Input Hysteresis . . . 120 mV T yp

D

Fail Safe . . . High Receiver Output With
Inputs Open

D

Operates From a Single 5-V Supply

D

Glitch-Free Power-Up and Power-Down
Protection

D

Interchangeable With National DS3695 and
DS3695A

description

The TL3695 differential bus transceiver is designed for bidirectional data communication on multipoint
bus-transmission lines. It is designed for balanced transmission lines and meets TIA/EIA-422-B,
TIA/EIA-485-A, and ITU Recommendation V.11.

The TL3695 combines a 3-state differential line driver and a differential input line receiver , both of which operate
from a single 5-V power supply . The driver and receiver have active-high and active-low enables, respectively ,
which can be externally connected together to function as a directional control. The driver differential outputs
and the receiver differential inputs are connected internally to form a differential input/output (I/O) bus port that
is designed to offer minimum loading to the bus when the driver is disabled or V

CC

= 0. This port features wide

positive and negative common-mode voltage ranges, making the device suitable for party line applications.
The TL3695 is characterized for operation from 0°C to 70°C.

Copyright  1999, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1
2
3
4

8
7
6
5

R
RE
DE

D

V

CC

B
A
GND

D OR P PACKAGE

(TOP VIEW)

TL3695
DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

AVAILABLE OPTIONS

PACKAGED DEVICES

T

A

SMALL OUTLINE

(D)

PLASTIC DIP

(P)

0°C to 70°C TL3695D TL3695P

The D package is available taped and reeled. Add the suffix R
to device type (e.g., TL3695DR).

Function Tables

DRIVER

INPUT

ENABLE

OUTPUTS

D DE

A B

H H H L
L H L H
X L Z Z

H = high level, L = low level, ? = indeterminate,
X = irrelevant, Z = high impedance (off)

RECEIVER

DIFFERENTIAL INPUTS

ENABLE OUTPUT

A – B RE R

VID ≥ 0.2 V L H

–0.2 V < VID < 0.2 V L ?

VID ≤ –0.2 V L L

X H Z

Inputs open L H

H = high level, L = low level, ? = indeterminate, X = irrelevant,
Z = high impedance (off)

logic symbol

†

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.

EN1

3

DE

EN2

2

A

6

1

B

7

1

R

1

2

4

D

RE

logic diagram (positive logic)

2

B

7

A

6

1

R

3

DE

4

D

Bus

RE

TL3695

DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

schematic of inputs and outputs

EQUIVALENT OF EACH INPUT

V

CC

R

(eq)

Input

Driver Input: R

(eq)

= 3 kΩ NOM

Enable Inputs: R

(eq)

= 8 kΩ NOM

R

(eq)

= equivalent resistor

TYPICAL OF A AND B I/O PORTS
V

CC

180 kΩ
NOM
Connected
on A Port

180 kΩ
NOM
Connected
on B Port

A or B

18 kΩ

NOM

3 kΩ
NOM

1.1 kΩ
NOM

TYPICAL OF RECEIVER OUTPUT

V

CC

85 Ω
NOM

Output

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

†

Supply voltage, VCC (see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range at any bus terminal –10 V to 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Enable input voltage, VI 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, TA 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θJA (see Note 2): D package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package 85°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

stg

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. All voltage values, except differential I/O bus voltage, are with respect to network ground terminal.

2. The package thermal impedance is calculated in accordance with JESD 51.

TL3695
DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

recommended operating conditions

MIN NOM MAX UNIT

Supply voltage, V

CC

4.75 5 5.25 V

p

12

Voltage at any bus terminal (separately or common mode), V

I

or V

IC

–7

V

High-level Input voltage, V

IH

D, DE, and RE 2 V

Low-level Input voltage, V

IL

D, DE, and RE 0.8 V

Differential input voltage, VID (see Note 3) ±12 V

p

Driver –60 mA

High-level output current, I

OH

Receiver – 400 µA

p

Driver 60

Low-level output current, I

OL

Receiver 8

mA

Operating free-air temperature, T

A

0 70 °C

NOTE 3: Differential input/output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B.

TL3695

DIFFERENTIAL BUS TRANSCEIVER

SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

V

IK

Input clamp voltage II = –18 mA –1.5 V

V

O

Output voltage IO = 0 0 6 V

|V

OD1

| Differential output voltage IO = 0 1.5 5 V

1/2V

|V

OD2

| Differential output voltage

R

L

=

100 Ω

,

See Figure 1

OD1

or 2

§

V

RL = 54 Ω, See Figure 1 1.5 2.5 5 V

V

OD3

Differential output voltage V

test

= –7 V to 12 V, See Figure 2 1.5 5 V

∆ |VOD|

Change in magnitude of differential output
voltage

¶

±0.2 V

V

OC

Common-mode output voltage

RL = 54 Ω, See Figure 1

3 V

∆ |VOC|

Change in magnitude of common-mode
output voltage

¶

±0.2 V

p

Output disabled,

VO = 12 V 1

IOOutput current

,

See Note 4

VO = –7 V –0.8

mA

I

IH

High-level input current VI = 2.4 V 20 µA

I

IL

Low-level input current VI = 0.4 V –200 µA

VO = –6 V –250

p

VO = 0 –150

IOSShort-circuit output current

#

VO = V

CC

250

mA

VO = 8 V 250

pp

Outputs enabled 23 50

ICCSupply 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 V

OD2

with a 100-Ω load is either 1/2 V

OD1

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

t

d(OD)

Differential-output delay time 8 22 ns
Skew (|t

d(ODH)

– t

d(ODL)

|)

CL1 = CL2 = 100 pF, RL = 60 Ω, See Figure 3

1 8 ns

t

t(OD)

Differential output transition time 8 18 ns

t

PZH

Output enable time to high level CL = 100 pF, RL = 500 Ω, See Figure 4 50 ns

t

PZL

Output enable time to low level CL = 100 pF, RL = 500 Ω, See Figure 5 50 ns

t

PHZ

Output disable time from high level CL = 15 pF, RL = 500 Ω, See Figure 4 8 30 ns

t

PLZ

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.