________________General Description
The MAX3093E/MAX3094E are rugged, low-power,
quad, RS-422/RS-485 receivers featuring electrostatic
discharge (ESD) protection for use in harsh environ-
ments. All receiver inputs are protected to ±15kV using
IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-
4-2 Contact Discharge, and ±15kV using the Human
Body Model. The MAX3093E operates from a +5V sup-
ply, while the MAX3094E operates from a +3.3V supply.
Receiver propagation delays are guaranteed to within
±8ns of a predetermined value, thereby ensuring
device-to-device matching across production lots.
The devices feature a 1nA low-power shutdown mode
in which the receiver outputs are high impedance.
When active, these receivers have a fail-safe feature
that guarantees a logic-high output if the input is open
circuit. They also have a quarter-unit-load input imped-
ance that allows 128 receivers on a bus.
The MAX3093E/MAX3094E are pin-compatible, low-
power upgrades to the industry-standard '34C86. They
are available in space-saving TSSOP, narrow SO, and
PDIP packages.
________________________Applications
Telecommunications Equipment
Rugged RS-422/RS-485/RS-423 Bus Receiver
Receivers for ESD-Sensitive Applications
Level Translators
____________________________Features
o ESD Protection
±15kV--IEC 1000-4-2 Air-Gap Discharge
±8kV--IEC 1000-4-2 Contact Discharge
±15kV--Human Body Model
o Guaranteed Propagation-Delay Tolerance
Between All ICs
±8ns (MAX3093E)
±10ns (MAX3094E)
o Single +3V Operation (MAX3094E)
Single +5V Operation (MAX3093E)
o 16-Pin TSSOP
o 10Mbps Data Rate
o Allow up to 128 Receivers on the Bus
o 1nA Low-Power Shutdown Mode
o 2.4mA Operating Supply Current
o Pin-Compatible Upgrades to '34C86
MAX3093E/MAX3094E
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
A-
V
CC
B-
B+
YB
ENBD
YD
D+
D-
TOP VIEW
MAX3093E
MAX3094E
TSSOP/SO/DIP
A+
YA
C+
ENAC
YC
C-
GND
C
A
B
D
Pin Configuration
YA
YB
YC
YD
A+
A-
B+
B-
C+
C-
D+
D-
MAX3093E
MAX3094E
V
CC
GND
ENBD
ENAC
A
B
C
D
________________Functional Diagram
19-1779; Rev 2; 10/02
PART
MAX3093ECUE
MAX3093ECSE
MAX3093ECPE
0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP RANGE
PIN-PACKAGE
16 TSSOP
16 Narrow SO
16 Plastic DIP
_______________Ordering Information
MAX3093EEUE
MAX3093EESE
MAX3093EEPE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 TSSOP
16 Narrow SO
16 Plastic DIP
MAX3094ECUE
MAX3094ECSE
MAX3094ECPE
0°C to +70°C
0°C to +70°C
0°C to +70°C
16 TSSOP
16 Narrow SO
16 Plastic DIP
MAX3094EEUE
MAX3094EESE
MAX3094EEPE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 TSSOP
16 Narrow SO
16 Plastic DIP
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
MAX3093E/MAX3094E
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS--MAX3093E
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5.0V, T
A
= +25°C.) (Note 1)
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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltage (V
CC
).............................................................+7V
Control Input Voltage (ENAC, ENBD).........-0.3V to (V
CC
+ 0.3V)
Receiver Input Voltage (_+, _-)............................................±25V
Receiver Output Voltage (Y_).....................-0.3V to (V
CC
+ 0.3V)
Output Short-Circuit Duration (Y_, one output) ..........Continuous
Continuous Power Dissipation (T
A
= +70°C)
TSSOP (derate 9.4mW/°C above +70°C) ....................755mW
SO (derate 8.7mW/°C above +70°C) ...........................696mW
Plastic DIP (derate 10.5mW/°C above +70°C) ............762mW
Operating Temperature Ranges
MAX309_EC_ _ ..................................................0°C to +70°C
MAX309_EE_ _ ...............................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
V
CM
= 0
IE C1000-4-2 Contact Discharge
-7V
V
CM
12V
IE C1000-4-2 Air-Gap Discharge
Human Body Model
-7V
V
CM
12V
0
V
OUT
V
CC
, output enabled
0
V
OUT
V
CC
, output disabled
I
OUT
= 4mA, V
ID
= -200mV,
output enabled, Figure 1
Output disabled
I
OUT
= -4mA, V
ID
= 200mV,
output enabled, Figure 1
No load, output enabled
CONDITIONS
±8
±15
kV
±15
ESD Protection
(Note 2)
µA
0.001
10
mA
2.4
3.5
I
CC
Supply Current
mV
45
mV
-200
200
V
TH
Receiver Differential Input
Threshold
Receiver Input Hysteresis
k
48
R
IN
Receiver Input Resistance
mA
±7
±75
I
OSR
Output Short-Circuit Current
µA
±1
I
OZR
Three-State Current at Receiver
Output
V
0.4
V
OL
Receiver Output Low Voltage
µA
±1
Enable Input Current
(ENAC/ENBD)
V
2.0
V
IH
Enable Input High Voltage
(ENAC/ENBD)
V
0.8
V
IL
Enable Input Low Voltage
(ENAC/ENBD)
V
V
CC
- 1.5
V
OH
Receiver Output High Voltage
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
µA
250
I
IN
Receiver Input Current (_+, _-)
V
CC
= 0 or 5.25V
V
IN
= 12V
-200
V
IN
= -7V
MAX3093E/MAX3094E
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
_______________________________________________________________________________________
3
DC ELECTRICAL CHARACTERISTICS--MAX3094E
(V
CC
= +3.0V to +3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C.) (Note 1)
SWITCHING CHARACTERISTICS--MAX3093E
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5.0V, T
A
= +25°C.)
V
CM
= 0
-7V
V
CM
12V
I
OUT
= -1.5mA, V
ID
= 200mV,
output enabled, Figure 1
CONDITIONS
mV
45
mV
-200
200
V
TH
Receiver Differential Input
Threshold
Receiver Input Hysteresis
µA
±1
Enable Input Current
(ENAC/ENBD)
V
2.0
V
IH
Enable Input High Voltage
(ENAC/ENBD)
V
0.8
V
IL
Enable Input Low Voltage
(ENAC/ENBD)
V
V
CC
- 0.4
V
OH
Receiver Output High Voltage
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
µA
250
I
IN
Receiver Input Current (_+, _-)
V
CC
= 0 or 3.6V
V
IN
= 12V
-200
V
IN
= -7V
Figure 2
ns
-2
±10
|
V
ID
|
= 3V,
Figure 2
t
SK
Propagation-Delay Skew
(t
PLH
- t
PHL
)
V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
V
CC
= 5.25V
V
CC
= 4.75V
Figure 3
Figure 3
|
V
ID
|
= 3V, Figure 2, matched conditions
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
Figure 3
T
A
= +25°C
Figure 3
CONDITIONS
T
A
= -40°C
t
PLH
, t
PHL
Input-to-Output Propagation
Delay
ns
T
A
= +70°C
76
92
T
A
= +70°C
80
96
Mbps
10
f
MAX
Maximum Data Rate
ns
60
100
t
HZ
Output Disable Time from
High Level
ns
60
100
t
LZ
Output Disable Time from
Low Level
78
86
94
65
98
ns
600
800
t
ZH
Output Enable Time to
High Level
ns
600
800
t
ZL
Output Enable Time to
Low Level
ns
16
Device-to-Device Propagation-
Delay Matching
68
76
84
71
79
87
65
73
81
82
90
98
74
82
90
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX3093E/MAX3094E
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
4
_______________________________________________________________________________________
IEC 1000-4-2 Contact Discharge
IEC 1000-4-2 Air-Gap Discharge
Human Body Model
Outputs disabled
No load, outputs enabled
CONDITIONS
±8
±15
kV
±15
ESD Protection
(Note 2)
µA
0.001
10
mA
2.4
4.0
I
CC
Supply Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
DC ELECTRICAL CHARACTERISTICS--MAX3094E (continued)
(V
CC
= +3.0V to +3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C.) (Note 1)
V
CC
= +3.3V ±5%, T
A
= T
MIN
to T
MAX
Figure 3
Figure 3
|
V
ID
|
= 3V, Figure 2, matched conditions
Figure 3
Figure 3
CONDITIONS
Mbps
10
f
MAX
Maximum Data Rate
ns
80
180
t
HZ
Output Disable Time from
High Level
ns
80
180
t
LZ
Output Disable Time from
Low Level
88
98
108
69
123
ns
600
1000
t
ZH
Output Enable Time to
High Level
ns
600
1000
t
ZL
Output Enable Time to
Low Level
ns
20
Device-to-Device Propagation-
Delay Matching
82
92
102
78
88
98
69
79
89
103
113
123
91
101
111
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
SWITCHING CHARACTERISTICS--MAX3094E
(V
CC
= +3.0V to +3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C.)
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device
ground, unless otherwise noted.
Note 2: Receiver inputs (_+, _-).
Figure 2
ns
-1
±10
t
SK
Propagation-Delay Skew
(t
PLH
- t
PHL
)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
R
IN
Receiver Input Resistance
-7V
V
CM
12V
k
48
V
OL
Receiver Output Low Voltage
I
OUT
= 2.5mA, V
ID
= -200mV,
output enabled, Figure 1
V
0.4
V
CC
= 3.60V
V
CC
= 3.00V
t
PLH
, t
PHL
Input-to-Output Propagation
Delay
ns
T
A
= +70°C
86
106
T
A
= +70°C
100
120
|
V
ID
|
= 3V,
Figure 2
I
OSR
Output Short-Circuit Current
0
V
OUT
V
CC
, output enabled
mA
±4
±60
I
OZR
Three-State Current at Receiver
Output
0
V
OUT
V
CC
, output disabled
µA
±1
MAX3093E/MAX3094E
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
_______________________________________________________________________________________
5
0
-10
-20
-30
-40
-50
0
2
1
3
4
5
OUTPUT CURRENT vs.
OUTPUT LOW VOLTAGE
MAX3093/94E-01
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
MAX3093E
MAX3094E
0
15
10
5
20
25
30
0
2
1
3
4
5
OUTPUT CURRENT vs.
OUTPUT HIGH VOLTAGE
MAX3093/94E-02
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
MAX3093E
MAX3094E
0
0.3
0.2
0.1
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40
10
-15
35
60
85
OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX3093/94E-03
TEMPERATURE (
°C)
OUTPUT LOW VOLTAGE (V)
MAX3093E
MAX3094E
I
OUT
= 8mA
0
1
3
2
4
5
-40
10
-15
35
60
85
OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX3093/94E-04
TEMPERATURE (
°C)
OUTPUT HIGH VOLTAGE (V)
MAX3093E
MAX3094E
I
OUT
= -8mA
70
80
100
90
110
120
-40
10
-15
35
60
85
MAX3093E
PROPAGATION DELAY vs. TEMPERATURE
MAX3093/94E-07
TEMPERATURE (
°C)
PROPAGATION DELAY (ns)
V
ID
= 3V
C
L
= 15pF
2.0
2.2
2.6
2.4
2.8
3.0
-40
10
-15
35
60
85
SUPPLY CURRENT vs. TEMPERATURE
MAX3093/94E-05
TEMPERATURE (
°C)
SUPPLY CURRENT (mA)
MAX3093E/MAX3094E
0
5
10
15
20
-40
10
-15
35
60
85
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX3093/94E-06
TEMPERATURE (
°C)
SHUTDOWN SUPPLY CURRENT (nA)
MAX3093E
MAX3094E
80
110
100
90
120
130
140
-40
10
-15
35
60
85
MAX3094E
PROPAGATION DELAY vs. TEMPERATURE
MAX3093/94E-08
TEMPERATURE (
°C)
PROPAGATION DELAY (ns)
V
ID
= 3V
C
L
= 15pF
Typical Operating Characteristics
(V
CC
= +5V for MAX3093E, V
CC
= +3.3V for MAX3094E, T
A
= +25°C, unless otherwise noted.)
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