Analog Devices ADM5170JP, ADM5170JN, ADM5170AP, ADM5170AN Datasheet
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: 617/329-4700 Fax: 617/326-8703
( 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
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