DS96F173M/DS96F175C/DS96F175M
EIA-485/EIA-422 Quad Differential Receivers
General Description
The DS96F173 and the DS96F175 are high speed quad dif-
ferential line receivers designed to meet the EIA-485 stan-
dard. The DS96F173 and the DS96F175 offer improved per-
formance due to the use of L-FAST bipolar technology. The
use of LFAST technology allows the DS96F173 and
DS96F175 to operate at higher speeds while minimizing
power consumption.
The DS96F173 and the DS96F175 have TRI-STATE
out-
puts and are optimized for balanced multipoint data bus
transmission at rates up to 15 Mbps. The receivers feature
high input impedance, input hysteresis for increased noise
immunity, and input sensitivity of 200 mV over a common
mode input voltage range of -7V to +12V. The receivers are
therefore suitable for multipoint applications in noisy environ-
ments. The DS96F173 features an active high and active
low Enable, common to all four receivers. The DS96F175
features separate active high Enables for each receiver pair.
Features
n
Meets EIA-485, EIA-422A, EIA-423A standards
n
Designed for multipoint bus applications
n
TRI-STATE outputs
n
Common mode input voltage range: -7V to +12V
n
Operates from single +5.0V supply
n
Reduced power consumption (I
CC
= 50 mA max)
n
Input sensitivity of
200 mV over common mode range
n
Input hysteresis of 50 mV typical
n
High input impedance
n
Military temperature range available
n
Qualified for MIL STD 883C
n
Available to standard military drawings (SMD)
n
Available in DIP(J), LCC(E), and FlatPak (W) packages
n
DS96F173 and DS96F175 are lead and function
compatible with SN75173/175 or the
AM26LS32/MC3486
Logic Diagrams
Function Tables
(Each Receiver) DS96F173
Differential Inputs
Enable
Output
AB
E
E
Y
V
ID
0.2V
H
X
H
X
L
H
V
ID
-0.2V
H
X
L
X
L
L
X
L
X
Z
X
X
H
Z
H = High Level
L = Low Level
Z = High Impedance (off)
X = Don't Care
(Each Receiver) DS96F175
Differential Inputs
Enable
Output
AB
E
Y
V
ID
0.2V
H
H
V
ID
-0.2V
H
L
X
L
Z
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
DS009627-10
DS96F175
DS009627-11
July 2000
DS96F173M/DS96F175C/DS96F175M
EIA-485/EIA-422
Quad
Differential
Receivers
2000 National Semiconductor Corporation
DS009627
www.national.com
COMMERCIAL
Absolute Maximum Ratings
(Note 2)
Specifications for the 883 version of this product are
listed separately.
Storage Temperature Range (T
STG
)
-65C to +175C
Lead Temperature
(Soldering, 60 sec.)
300C
Max. Package Power Dissipation (Note 1) at 25C
Ceramic DIP (J)
1500 mW
Supply Voltage
7.0V
Input Voltage, A or B Inputs
25V
Differential Input Voltage
25V
Enable Input Voltage
7.0V
Low Level Output Current
50 mA
Recommended Operating
Conditions
Min
Typ
Max
Units
Supply Voltage (V
CC
)
DS96F175C
4.75
5.0
5.25
V
Common Mode Input
Voltage (V
CM
)
-7
+12
V
Differential Input Voltage
(V
ID
)
|12|
V
Output Current HIGH (I
OH
)
-400
A
Output Current LOW (I
OL
)
11
mA
Operating Temperature (T
A
)
DS96F175C
0
25
70
C
Note 1: Derate package 10 mW/C above 25C.
Electrical Characteristics
(Notes 3, 4)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
TH
Differential-Input
V
O
= V
OH
0.2
V
High Threshold Voltage
V
TL
Differential-Input (Note 5)
V
O
= V
OL
-0.2
V
Low Threshold Voltage
V
TH
- V
TL
Hysteresis (Note 6)
V
CM
= 0V
50
mV
V
IH
Enable Input Voltage HIGH
2.0
V
V
IL
Enable Input Voltage LOW
0.8
V
V
IC
Enable Input Clamp Voltage
I
I
= -18 mA
-1.5
V
V
OH
Output Voltage HIGH
V
ID
= 200 mV
0C to +70C
2.8
V
I
OH
= -400 A
-55C to +125C
2.5
V
OL
Output Voltage LOW
V
ID
= -200 mV
I
OL
= 8.0 mA
0.45
V
I
OL
= 11 mA
0.50
I
OZ
High-Impedance State Output
V
O
= 0.4V to 2.4V
20
A
I
I
Line Input Current (Note 7)
Other Input = 0V
V
I
= 12V
1.0
mA
V
I
= -7.0V
-0.8
I
IH
Enable Input Current HIGH
V
IH
= 2.7V
20
A
I
IL
Enable Input Current LOW
V
IL
= 0.4V
-100
A
R
I
Input Resistance
14
18
22
k
I
OS
Short Circuit Output Current
(Note 8)
-15
-85
mA
I
CC
Supply Current
No Load
Outputs Enabled
50
mA
I
CCX
Outputs Disabled
50
COMMERCIAL
Switching Characteristics
V
CC
= 5.0V, T
A
= 25C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PLH
Propagation Delay Time,
V
ID
= -2.5V to +2.5V,
5.0
15
22
ns
Low to High Level Output
C
L
= 15 pF,
Figure 1
t
PHL
Propagation Delay Time,
V
CM
= 0V
5.0
15
22
ns
High to Low Level Output
t
ZH
Output Enable Time to High Level
C
L
= 15 pF,
Figure 2
12
16
ns
t
ZL
Output Enable Time to Low Level
C
L
= 15 pF,
Figure 3
13
18
ns
t
HZ
Output Disable Time from High Level
C
L
= 5.0 pF,
Figure 2
14
20
ns
DS96F173M/DS96F175C/DS96F175M
www.national.com
2
Switching Characteristics
(Continued)
V
CC
= 5.0V, T
A
= 25C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
LZ
Output Disable Time from Low Level
C
L
= 5.0 pF,
Figure 3
14
18
ns
|t
PLH
t
PHL
|
Pulse Width Distortion (SKEW)
Figure 1
1.0
3.0
ns
Note 2: "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables of "Electrical Characteristics" provide conditions for actual device operation.
Note 3: Unless otherwise specified min/max limits apply across the 0C to +70C range for the DS96F175C. All typicals are given for V
CC
= 5V and T
A
= 25C.
Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are reference to ground unless otherwise specified.
Note 5: The algebraic convention, when 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.
Note 6: Hysteresis is the difference between the positive-going input threshold voltage. V
TH
, and the negative going input threshold voltage, V
TL
.
Note 7: Refer to EIA-485 Standard for exact conditions.
Note 8: Only one output at a time should be shorted.
Order Number: DS96F175CJ
See NS Package Number J16A
DS96F173M/DS96F175C/DS96F175M
www.national.com
3
MIL-STD-883C
Absolute Maximum Ratings
(Note 2)
For complete Military Specifications, refer to the appro-
priate SMD or MDS.
Storage Temperature Range (T
STG
)
-65C to +175C
Lead Temperature
(Soldering, 60 sec.)
300C
Max. Package Power Dissipation (Note 9) at 25C
Ceramic DIP (J)
1500 mW
Ceramic Flatpak (W)
1034 mW
Ceramic LCC (E)
1500 mW
Supply Voltage
7.0V
Input Voltage, A or B Inputs
25V
Differential Input Voltage
25V
Enable Input Voltage
7.0V
Low Level Output Current
50 mA
Recommended Operating
Conditions
Min Typ Max Units
Supply Voltage (V
CC
)
DS96F173M/DS96F175M
4.50 5.0 5.50
V
Common Mode
Input Voltage (V
CM
)
-7
+12
V
Differential Input Voltage (V
ID
)
|12|
V
Output Current HIGH (I
OH
)
-400
A
Output Current LOW (I
OL
)
11
mA
Operating Temperature (T
A
)
DS96F173M/DS96F175M
-55
25
125
C
Note 9: Above T
A
= 25C derate J package 10 mW/C, W package
6.90 mW/C, E package 11.11 mW/C.
Electrical Characteristics
(Notes 3, 4)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified
Symbol
Parameter
Conditions
Min
Max
Units
V
TH
Differential-Input
High Threshold Voltage
V
CC
= 4.5V, 5.5V
V
CM
= 0V, 12V, -12V
0.2
V
V
TL
Differential-Input (Note 5)
Low Threshold Voltage
V
CC
= 4.5V, 5.5V
V
CM
= 0V, 12V, -12V
-0.2
V
V
IH
Enable Input Voltage HIGH
2.0
V
V
IL
Enable Input Voltage LOW
0.8
V
V
IC
Enable Input Clamp Voltage
I
I
= -18 mA, V
CC
= 4.5V
-1.5
V
V
OH
Output Voltage HIGH
V
ID
= 200 mV
I
OH
= -400 A
-55C to +125C
2.5
V
V
OL
Output Voltage LOW
V
ID
= -200 mV
I
OL
= 8.0 mA
0.45
V
I
OZ
High-Impedance State Output
V
O
= 0.4V, 2.4V, V
CC
= 5.5V
20
A
I
I
Line Input Current (Note 7)
Other Input = 0V
V
I
= 12V
1.0
mA
V
I
= -7.0V
-0.8
I
IH
Enable Input Current HIGH
V
IH
= 2.7V, V
CC
= 5.5V
20
A
I
IL
Enable Input Current LOW
V
IL
= 0.4V, V
CC
= 5.5V
-100
A
R
I
Input Resistance
10
k
I
OS
Short Circuit Output Current
(Note 8)
-15
-85
mA
I
CC
Supply Current
No Load
Outputs Enabled
or Disabled
50
mA
I
CCX
MIL-STD-883C
Switching Characteristics
V
CC
= 5.0V
Symbol
Parameter
Conditions
T
A
= 25C
T
A
= -55C
T
A
=
125C
Units
Typ
Max
Max
Max
t
PLH
Propagation Delay Time,
V
ID
= -2.5V to +2.5V,
15
22
30
30
ns
Low to High Level Output
C
L
= 15 pF,
Figure 1
t
PHL
Propagation Delay Time,
V
CM
= 0V
15
22
30
30
ns
High to Low Level Output
t
ZH
Output Enable Time to High
Level
C
L
= 15 pF,
Figure 2
12
16
27
27
ns
DS96F173M/DS96F175C/DS96F175M
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4
Switching Characteristics
(Continued)
V
CC
= 5.0V
Symbol
Parameter
Conditions
T
A
= 25C
T
A
= -55C
T
A
=
125C
Units
Typ
Max
Max
Max
t
ZL
Output Enable Time to Low
Level
C
L
= 15 pF,
Figure 3
13
18
27
27
ns
t
HZ
Output Disable Time from High
Level
C
L
= 5.0 pF,
Figure 2(Note 15)
14
20
27
27
ns
C
L
= 20 pF,
Figure 2(Note 15)
14
30
37
37
ns
t
LZ
Output Disable Time from Low
Level
C
L
= 5.0 pF,
Figure 3
14
18
30
30
ns
|t
PLH
t
PHL
|
Pulse Width Distortion (SKEW)
Figure 1
1
3
5.0
5.0
ns
SMD Number:
DS96F173MJ
5962-9076602 MEA
DS96F173MW
5962-9076602 MFA
DS96F173ME
5962-9076602 M2A
DS96F175MJ
5962-9076601 MEA
DS96F175MW
5962-9076601 MFA
DS96F175ME
5962-9076601 M2A
Order Number:
883 Marking
SMD Marking
DS96F173MJ/883
DS96F173MJ-SMD
DS96F175MJ/883
DS96F175MJ-SMD
See NS Package Number
J16A
DS96F173ME/883
DS96F173ME-SMD
DS96F175ME/883
DS96F175ME-SMD
See NS Package Number
E20A
DS96F173MW/883
DS96F173MW-SMD
DS96F175MW/883
DS96F175MW-SMD
See NS Package Number
W16A
For complete Military Product Specifications, refer
to the appropriate SMD or MDS.
DS96F173M/DS96F175C/DS96F175M
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