Datasheet ADM5170JP, ADM5170JN, ADM5170AP, ADM5170AN Datasheet (Analog Devices)

a

Octal, RS-232/RS-423 Line Driver

ADM5170

FEATURES
Eight Single Ended Line Drivers in One Package
Meets EIA Standard RS-232E, RS-423A and
CCITT V.10/X.26
Resistor Programmable Slew Rate
Wide Supply Voltage Range
Low Power CMOS
3-State Outputs
TTL/CMOS Compatible Inputs
Output Short Circuit Protection
Available in 28-Pin DIP/PLCC
Low Power Replacement for UC5170C

APPLICATIONS
High Speed Communication
Computer I-O Ports Peripherals
High Speed Modems
Printers
Logic Level Translation

GENERAL DESCRIPTION

The ADM5170 is an octal line driver suitable for digital communi­cation systems with data rates up to 116 kB/s. Input TTL or
CMOS signal levels are inverted and translated into either EIA
RS-232E or RS-423A signal levels depending on the status of the
Mode Select inputs MS+ and MS–. With both Mode Select inputs
at GND, RS-423 operation is selected while with MS+ connected

and MS– connected to VSS, RS-232 operation is selected.

to V

DD

The output slew rates may be controlled using an external resistor
connected between the SRA (Slew Rate Adjust) pin and GND.
Resistor values between 2 kΩ and 10 kΩ may be selected giving a
slew rate which can be adjusted from 10 V/µs to 2.2 V/µs. This
adjustment of the slew rate allows tailoring of the output character­istics to suit the interface cable being used.

The outputs may be disabled using the EN (Enable Input). This
feature permits sharing of a common output line.

The ADM5170 is fabricated on an advanced CMOS process
featuring low power consumption. In the disabled state the power
consumption reduces from 500 mW to 40 mW. The ADM5170 is
available in both 28-pin DIP and 28-lead PLCC packages.

FUNCTIONAL BLOCK DIAGRAM

ADM5170

A

O

B

O

C

O

D

O

E

O

F

O

G

O

H

O

MS+

MS–

SRA

EN

A

I

B

I

C

I

D

I

E

I

F

I

G

I

H

I

A

B

C

D

E

F

G

H

RS-232/RS-423
MODE SELECT

SLEW RATE

CONTROL

Truth Table

Inputs Outputs
EN Data EIA RS-232E

00(V
01(V

– 3 V) 5 V to 6 V

DD

– 3 V) –5 V to –6 V

SS

1

RS-423A

1 X High Z High Z

1

Minimum Output Level

REV. 0

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: [phone] Fax: [phone]

( V

ADM5170–SPECIFICA TIONS

= +10 V ± 10%, V

DD

10 kΩ. All Specifications T

= –10 V ± 10% V, MS+ = MS– = 0 V, R

SS

to T

MIN

unless otherwise noted.)

MAX

Parameter Min Typ Max Units Test Conditions/Comments

POWER REQUIREMENTS

V

Range 9 15 V

DD

V

Range –9 –15 V

SS

(Disabled) 2 4 mA EN = High,

I

DD

(Enabled) 25 36 mA RL = ∞, EN = 0 V

I

DD

I

(Disabled) –2 –4 mA EN = High

SS

I

(Enabled) –23 –36 mA RL = ∞, EN = 0 V

SS

DIGITAL INPUTS

Input Logic Threshold High, V
Input Logic Threshold Low, V
Input Clamp Voltage, V
Input High Level Current, I
Input Low Level Current, I

INH

INL

INK

INH

INL

2.0 V

0.8 V

–1.1 –1.8 V IIN = –15 mA

1 µAV

–1 µAV

= 2.4 V

INH

= 0.4 V

INL

OUTPUTS

RS-423A Outputs EN = 0.8 V, MS+ = MS– = 0 V

High Level Output Voltage 5.0 5.3 6.0 V R

5.0 5.3 6.0 V R

4.5 5.2 6.0 V R

Low Level Output Voltage –5.0 –5.3 –6.0 V R

–5.0 –5.6 –6.0 V R
–4.5 –5.4 –6.0 V R

Output Balance, V

BAL

0.05 0.4 V RL = 450 Ω, V

= ∞, VIN = 0.8 V

L

= 3 kΩ, VIN = 0.8 V

L

= 450 Ω, VIN = 0.8 V

L

= ∞, VIN = 2.0 V

L

= 3 kΩ, VIN = 2.0 V

L

= 450 Ω, VIN = 2.0 V

L

= VOH– V

BAL

OL

RS-232 Outputs EN = 0.8 V, MS+ = VDD, MS– = V

High Level Output Voltage 7.0 7.6 V

7.0 7.6 V

Low Level Output Voltage –7.0 –7.7 V

–7.0 –7.7 V
Off-State Output Current, I
Short Circuit Current, I

OS

OZ

–100 100 µA EN = 2.0 V, VO = ±6 V, VDD= 15 V, VSS = –15 V

15 50 100 mA VIN = 0 V, EN = 0 V

VR

DD

VR

DD

VR

SS

VR

SS

= ∞, VIN = 0.8 V

L

= 3 kΩ, VIN = 0.8 V

L

= ∞, VIN = 2.0 V

L

= 3 kΩ, VIN = 2.0 V

L

15 40 100 mA VIN = 5 V, EN = 0 V

Specifications subject to change without notice.

=

SRA

SS

( V

TIMING CHARACTERISTICS

= +10 V ± 10%, V

DD

unless otherwise noted.)

= –10 V ± 10%, MS+ = MS– = 0 V. All Specifications T

SS

Parameter Min Typ Max Units Test Conditions/Comments

Output Slew Rate Fig 1, Fig 2. R

6.65 10 14 V/µs Rising/Falling Edge, t

Output Slew Rate Fig 1, Fig 2. R

1.33 2.0 3 V/µs Rising/Falling Edge, t

Output to Hi-Z Propagation Delay (Disable) Fig 1, Fig 3. R

0.3 1.0 µst

0.5 1.0 µst

HZ
LZ

Hi-Z to Valid Output Propagation Delay (Enable) Fig 1, Fig 3. R

6.0 15 µst

7.0 15 µst

Specifications subject to change without notice.

ZH
ZL

= 2 kΩ, RL = 450 Ω, CL = 50 pF

SRA

, t

R

F

= 10 kΩ, RL = 450 Ω, CL = 50 pF

SRA

, t

R

= 10 kΩ, RL = 450 Ω, CL = 50 pF

SRA

= 10 kΩ, RL = 450Ω, CL = 50 pF

SRA

F

MIN

to T

MAX

–2–

REV. 0

ADM5170

INPUT

EN

OUTPUT

V

IN

= 0V

t

HZ

0.5V

0.5V

t

LZ

t

ZL

t

ZH

90%

90%

1.5V

1.5V

OUTPUT

V

IN

= 5V

V

OL

V

OH

ABSOLUTE MAXIMUM RATINGS*

(TA= 25°C unless otherwise noted)

VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–15 V

V

SS

Input Voltages

VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 to (V

+ 0.3 V)

DD

Ouput Voltages
V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –12 V to +12 V

OUT

Output Short Circuit Duration . . . . . . . . . . . . . . . . . . Continuous

Power Dissipation Plastic DIP . . . . . . . . . . . . . . . . . . . . 1250 mW

(Derate at 12.5 mW/°C above +50°C)

, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 75°C/W

θ

JA

Power Dissipation PLCC . . . . . . . . . . . . . . . . . . . . . . . 1000 mW

(Derate at 10 mW/°C above +50°C)

, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W

θ

JA

Operating Temperature Range

Commercial (J Version) . . . . . . . . . . . . . . . . . . . . 0°C to +70°C

Industrial (A Version) . . . . . . . . . . . . . . . . . . . . –40°C to +85°C

Lead Temperature (Soldering 10 sec) . . . . . . . . . . . . . . . . +300°C

Vapour Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +215°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C

*This is a stress rating only and functional operation of the device at these or any

other conditions above those indicated in the operation sections of this specifica­tion is not implied. Exposure to absolute maximum rating conditions for extended
periods of time may affect reliability.

ORDERING GUIDE

Model Temperature Range Package Option

ADM5170JN 0°C to +70°C N-28
ADM5170AN –40°C to +85°C N-28
ADM5170JP 0°C to +70°C P-28A
ADM5170AP –40°C to +85°C P-28A

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the ADM5170 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.

V

IN

MS+

MS–

SRA

EN

RS-232/RS-423

MODE SELECT

SLEW RATE

CONTROL

R

C

L

L

Figure 1. Timing Test Circuit

V

IN

t

F

10%

t

R

90%

Figure 3. Enable/Disable Timing Waveforms

WARNING!

ESD SENSITIVE DEVICE

V

OUT

90%

10%

Figure 2. Rise/Fall Timing Waveforms

REV. 0 –3–

ADM5170

PIN CONFIGURATIONS

DIP

1

NC

2

A

O

3

A

I

4

B

I

B

5

O

C

6

O

ADM5170

C

7

I

TOP VIEW

8

D

(Not to Scale)

I

9

D

O

10

EN MS+

11

V

SS

12

SRA MS–

13

NC NC

14

NC NC

NC = NO CONNECT

28
27

26
25
24
23

22
21
20
19

18
17
16
15

H

O

H

I

G

I

G

O

F

O

F

I

E

I

E

O

V

DD

GND

PLCC

I

B

5

O

6

C

O

7

C

I

8

D

I

9

D

O

10

EN

V

11

SS

NC = NO CONNECT

O

I

A

A

B

1

ADM5170

TOP VIEW

(Not to Scale)

15 18

13

14

NC

NC

SRA

NC

28 423

16 12

NC

I

O

H

H

26

27

17

NC

MS–

I

G

25
24

23
22
21
20
19

GND

G

F
F
E

E

V

MS+

O
O

I

I

O

DD

PIN FUNCTION DESCRIPTION

Mnemonic Function

V

DD

V

SS

Power Supply Input, +10 V ± 10%.

Power Supply Input, –10 V ± 10%.
GND Ground Pin. Must be connected to 0 V.
A

...H

I

AO...H

Digital Input to Drivers A to H.

I

RS-232/RS-423 Output from Drivers A to H.

O

EN Enable Pin. When high, all outputs are 3-stated.
MS+, MS– Mode Select Inputs. Used to control the output

level swing. With MS+ & MS– connected to GND,

RS-423A output levels are selected. With MS+

connected to V

and MS– connected to VSS,

DD

RS-232 output levels are developed.
SRA Slew Rate Adjust Input. An external resistor (2 kΩ

to 10 kΩ) connected between this pin and GND is

used to control the Output Slew Rate (10 V/µs to

2.2 V/µs).

Slew Rate Programming

The slew rate for the ADM5170 is controlled by a single resistor
connected between the SRA pin and GND. The slew rate is

approximately.

Slew Rate (V/µs) = 20/R

SRA

(kΩ)

Resistors between 2 kΩ and 10 kΩ may be used providing a slew
rate which may be varied from 10 V/µs to 2.2 V/µs. Figure 5 in the
Typical Performance Characteristics section shows how the slew
rate varies with R
(10% to 90%) varies with R

while Figure 8 shows how the transition time

SRA

. Waveshaping of the output allows

SRA

the user to control the level of interference (near-end crosstalk)
which may be coupled to adjacent circuits in an interconnection.
The recommended output characteristics for cable length and data
rate are given in the EIA RS-423A specifications.

Maximum Data Rate (kB/s) = 300/t (for rates from 1 kB/s to
100 kB/s).

Cable Length (feet) = 100 X t (Max Length = 4000 ft.)

where t is the transition time (in µs) for the output to swing from
10% to 90% of its steady state values. The absolute maximum data
rate is 100 kB/s and the maximum cable length is limited to 4000 ft.

Output Mode Programming

The ADM5170 has two programmable output modes which
provide different output voltage levels. The low output mode meets
the specifications of EIA standards RS-423A while the high output
mode meets the RS-232 specifications. The high output mode
provides greater output swings and is suitable for driving lines
where higher attenuation levels must be tolerated. This mode is
selected by connecting the mode select pins to the supplies, MS+ to

and MS– to VSS. The low output mode is selected by connect-

V

DD

ing both mode select pins MS+ and MS– to GND. This mode
provides a controlled output swing with lower output levels.

Inputs Outputs

MS+ MS– EN Data Output

GND GND 0 0 5 V to 6 V (RS-423)
GND GND 0 1 –5 V to –6 V (RS-423)
V

DD

V

DD

V

SS

V

SS

00 (V
01 (V

– 3 V) (RS-232)

DD

+ 3 V) (RS-232)

SS

1

1

X X 1 X High Z

1

Minimum Output Level.

Typical Application Circuit

A typical application circuit using a single driver in the ADM5170
is shown in Figure 4. This circuit is suitable for either RS-232 or
RS-423 communication. An ADM5180 octal receiver is used to
translate the signal back to CMOS logic level at the receiving end.

V

H

V

L

INPUT

EN

R

ADM5170

SL

1/8

V

V

DD

+V

–V

RS-232/RS-422A

TRANSMISSION

SS

V
V

1/8

ADM5180

TIE TO GND
FOR RS-232

H
L

Figure 4. RS-232/RS-423A Typical Application Circuit

–4–

REV. 0

Typical Performance Characteristics–ADM5170

VDD/ VSS – V

DRIVER OUTPUT VOLTAGE – V

5.6

5.1
15

5.4

5.2

10

5.3

9

5.5

14131211

ΩVOH (RL= 450Ω)

∞VOH (RL= ∞)

VOL (RL= 450Ω)

∞VOL (RL= ∞)

10

90

100

0%

5V

A1

1µs

20V

5V

12

5

10

t

r

8

6

4

SLEW RATE – V/µs

2

0

0

t

f

2

ΩR

SRA

– kΩ

Figure 5. Typical Slew Rate vs. R

A1

20V

100

90

10

0%

5V

5V

4

t

– kΩ

f

t

r

864

10

3

2

TRANSITION TIME – µs

1

864

1

µ

s

10

SRA

0

0

2

ΩR

SRA

Figure 8. Typical Rise/Fall Times (RS-423A Mode) vs.
R

SRA

= 2 kΩ)

SRA

15

14

13

12

11

10

9

DRIVER OUTPUT VOLTAGE – V

8

7

109

Figure 7. V

V

VOL (RL= ∞)

/

OH

ΩVOL (RL= 3kΩ)

ΩVOH (RL= 3kΩ)

VDD/VSS – V

vs. VDD/VSS (RS-232 Mode)

OH/VOL

15

14131211

Figure 9. Slew Rate (R

Figure 10. VOH/VOL vs. VDD/VSS (RS-423 Mode)

SRA

= 10 kΩ)Figure 6. Slew Rate (R

REV. 0

–5–

ADM5170

0.048 (1.21)

0.042 (1.07)

0.456 (11.58)

0.450 (11.43)

SQ

0.495 (12.57)

0.485 (12.32)

SQ

0.048 (1.21)

0.042 (1.07)

0.050

(1.27)

BSC

26

4

TOP VIEW

25

19

12

11

PIN 1

IDENTIFIER

5

18

0.020

(0.50)

R

0.032 (0.81)

0.026 (0.66)

0.021 (0.53)

0.013 (0.33)

0.056 (1.42)

0.042 (1.07)

0.025 (0.63)

0.015 (0.38)

0.180 (4.57)

0.165 (4.19)

0.430 (10.92)

0.390 (9.91)

0.110 (2.79)

0.085 (2.16)

0.040 (1.01)

0.025 (0.64)

10

V

OH

8

V

OL

6

4

2

DRIVER OUTPUT VOLTAGE –  V

0

0

5

201510

OUTPUT CURRENT – ˙mA

Figure 11. Driver Output Voltage vs. Output Current

(RS-232 Mode)

Dimensions shown in inches and (mm).

28-Lead Plastic DIP 28-Lead Plastic Leaded Chip Carrier (PLCC)

(N Suffix) (P Suffix)

6

5

4

3

2

1

DRIVER OUTPUT VOLTAGE –  V

0

25

0

Figure 12. Driver Output Voltage vs. Output Current

(RS-423 Mode)

OUTLINE DIMENSIONS

5

OUTPUT CURRENT – ˙mA

 VOL

V

OH

C1853–7.5–10/93

201510

25

0.070 (1.77)
MAX

0.195 (4.95)

0.125 (3.18)

15

0.580 (14.73)

0.485 (12.32)

14

0.060 (1.52)

0.015 (0.38)

0.150
(3.81)

MIN

SEATING
PLANE

–6–

PRINTED IN U.S.A.

REV. 0

28

PIN
1

1

1.565 (39.70)

0.250
(6.35)

MAX

0.200 (5.05)

0.125 (3.18)

0.022 (0.558)

0.014 (0.356)

1.380 (35.10)

0.100
(2.54)

BSC

0.625 (15.87)

0.600 (15.24)

0.015 (0.381)

0.008 (0.204)