19-1779; Rev 2; 10/02
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
________________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.
____________________________Features
♦
ESD Protection
±15kV—IEC 1000-4-2 Air-Gap Discharge
±8kV—IEC 1000-4-2 Contact Discharge
±15kV—Human Body Model
♦
Guaranteed Propagation-Delay Tolerance
Between All ICs
±8ns (MAX3093E)
±10ns (MAX3094E)
♦
Single +3V Operation (MAX3094E)
Single +5V Operation (MAX3093E)
♦
16-Pin TSSOP
♦
10Mbps Data Rate
♦
Allow up to 128 Receivers on the Bus
♦
1nA Low-Power Shutdown Mode
♦
2.4mA Operating Supply Current
♦
Pin-Compatible Upgrades to
’34C86
MAX3093E/MAX3094E
_______________Ordering Information
PART
MAX3093ECUE
MAX3093ECSE
MAX3093ECPE
MAX3093EEUE
MAX3093EESE
MAX3093EEPE
MAX3094ECUE
MAX3094ECSE
MAX3094ECPE
MAX3094EEUE
MAX3094EESE
MAX3094EEPE
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 TSSOP
16 Narrow SO
16 Plastic DIP
16 TSSOP
16 Narrow SO
16 Plastic DIP
16 TSSOP
16 Narrow SO
16 Plastic DIP
16 TSSOP
16 Narrow SO
16 Plastic DIP
________________________Applications
Telecommunications Equipment
Rugged RS-422/RS-485/RS-423 Bus Receiver
Receivers for ESD-Sensitive Applications
Level Translators
________________Functional Diagram
V
CC
ENBD
ENAC
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
GND
MAX3093E
MAX3094E
YA
Pin Configuration
TOP VIEW
A- 1
A
YB
A+ 2
YA 3
ENAC 4
YC
C
YD
YC 5
C+ 6
C- 7
GND 8
16 V
CC
15 B-
14 B+
B
MAX3093E
MAX3094E
13 YB
12 ENBD
11 YD
10 D+
9
D-
D
TSSOP/SO/DIP
1
________________________________________________________________
Maxim Integrated Products
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.
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
MAX3093E/MAX3094E
ABSOLUTE MAXIMUM RATINGS
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
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.
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)
PARAMETER
Receiver Differential Input
Threshold
Receiver Input Hysteresis
Receiver Input Current (_+, _-)
Enable Input Current
(ENAC/ENBD)
Enable Input High Voltage
(ENAC/ENBD)
Enable Input Low Voltage
(ENAC/ENBD)
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State Current at Receiver
Output
Output Short-Circuit Current
Receiver Input Resistance
Supply Current
ESD Protection
(Note 2)
V
IH
V
IL
V
OH
V
OL
I
OZR
I
OSR
R
IN
I
CC
I
OUT
= -4mA, V
ID
= 200mV,
output enabled, Figure 1
I
OUT
= 4mA, V
ID
= -200mV,
output enabled, Figure 1
0
≤
V
OUT
≤
V
CC
, output disabled
0
≤
V
OUT
≤
V
CC
, output enabled
-7V
≤
V
CM
≤
12V
No load, output enabled
Output disabled
Human Body Model
IE C1000-4-2 Air-Gap Discharge
IE C1000-4-2 Contact Discharge
±7
48
2.4
0.001
±15
±15
±8
kV
3.5
10
V
CC
- 1.5
0.4
±1
±75
2.0
0.8
I
IN
SYMBOL
V
TH
CONDITIONS
-7V
≤
V
CM
≤
12V
V
CM
= 0
V
CC
= 0 or 5.25V
V
IN
= 12V
V
IN
= -7V
MIN
-200
45
250
-200
±1
TYP
MAX
200
UNITS
mV
mV
µA
µA
V
V
V
V
µA
mA
kΩ
mA
µA
2
_______________________________________________________________________________________
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
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.)
PARAMETER
SYMBOL
CONDITIONS
V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
T
A
= +85°C
V
CC
= 5.25V
Input-to-Output Propagation
Delay
t
PLH
, t
PHL
T
A
= +70°C
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
V
CC
= 4.75V
T
A
= +70°C
T
A
= +25°C
T
A
= -40°C
Device-to-Device Propagation-
Delay Matching
Propagation-Delay Skew
(t
PLH
- t
PHL
)
Output Enable Time to
Low Level
Output Enable Time to
High Level
Output Disable Time from
Low Level
Output Disable Time from
High Level
Maximum Data Rate
t
SK
t
ZL
t
ZH
t
LZ
t
HZ
f
MAX
MIN
65
78
76
71
65
82
80
74
68
82
76
79
73
90
86
TYP
MAX
98
94
92
87
81
98
96
90
84
16
-2
600
600
60
60
10
±10
800
800
100
100
ns
ns
ns
ns
ns
ns
Mbps
ns
UNITS
MAX3093E/MAX3094E
|
V
ID
|
= 3V,
Figure 2
|
V
ID
|
= 3V, Figure 2, matched conditions
Figure 2
Figure 3
Figure 3
Figure 3
Figure 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)
PARAMETER
Receiver Differential Input
Threshold
Receiver Input Hysteresis
Receiver Input Current (_+, _-)
Enable Input Current
(ENAC/ENBD)
Enable Input High Voltage
(ENAC/ENBD)
Enable Input Low Voltage
(ENAC/ENBD)
Receiver Output High Voltage
V
IH
V
IL
V
OH
I
OUT
= -1.5mA, V
ID
= 200mV,
output enabled, Figure 1
V
CC
- 0.4
2.0
0.8
I
IN
SYMBOL
V
TH
CONDITIONS
-7V
≤
V
CM
≤
12V
V
CM
= 0
V
CC
= 0 or 3.6V
V
IN
= 12V
V
IN
= -7V
MIN
-200
45
250
-200
±1
TYP
MAX
200
UNITS
mV
mV
µA
µA
V
V
V
_______________________________________________________________________________________
3
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
MAX3093E/MAX3094E
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)
PARAMETER
Receiver Output Low Voltage
Three-State Current at Receiver
Output
Output Short-Circuit Current
Receiver Input Resistance
Supply Current
ESD Protection
(Note 2)
SYMBOL
V
OL
I
OZR
I
OSR
R
IN
I
CC
CONDITIONS
I
OUT
= 2.5mA, V
ID
= -200mV,
output enabled, Figure 1
0
≤
V
OUT
≤
V
CC
, output disabled
0
≤
V
OUT
≤
V
CC
, output enabled
-7V
≤
V
CM
≤
12V
No load, outputs enabled
Outputs disabled
Human Body Model
IEC 1000-4-2 Air-Gap Discharge
IEC 1000-4-2 Contact Discharge
±4
48
2.4
0.001
±15
±15
±8
kV
4.0
10
MIN
TYP
MAX
0.4
±1
±60
UNITS
V
µA
mA
kΩ
mA
µA
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.)
PARAMETER
SYMBOL
CONDITIONS
V
CC
= +3.3V ±5%, T
A
= T
MIN
to T
MAX
T
A
= +85°C
V
CC
= 3.60V
Input-to-Output Propagation
Delay
t
PLH
, t
PHL
T
A
= +70°C
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
V
CC
= 3.00V
T
A
= +70°C
T
A
= +25°C
T
A
= -40°C
Device-to-Device Propagation-
Delay Matching
Propagation-Delay Skew
(t
PLH
- t
PHL
)
Output Enable Time to
Low Level
Output Enable Time to
High Level
Output Disable Time from
Low Level
Output Disable Time from
High Level
Maximum Data Rate
t
SK
t
ZL
t
ZH
t
LZ
t
HZ
f
MAX
MIN
69
88
86
78
69
103
100
91
82
101
92
88
79
113
98
TYP
MAX
123
108
106
98
89
123
120
111
102
20
-1
600
600
80
80
10
±10
1000
1000
180
180
ns
ns
ns
ns
ns
ns
Mbps
ns
UNITS
|
V
ID
|
= 3V,
Figure 2
|
V
ID
|
= 3V, Figure 2, matched conditions
Figure 2
Figure 3
Figure 3
Figure 3
Figure 3
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 (_+, _-).
4
_______________________________________________________________________________________
±15kV ESD-Protected, 10Mbps, 3V/5V,
Low-Power Quad RS-422/RS-485 Receivers
Typical Operating Characteristics
(V
CC
= +5V for MAX3093E, V
CC
= +3.3V for MAX3094E, T
A
= +25°C, unless otherwise noted.)
OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX3093/94E-02
MAX3093E/MAX3094E
OUTPUT CURRENT vs.
OUTPUT LOW VOLTAGE
MAX3093/94E-01
OUTPUT CURRENT vs.
OUTPUT HIGH VOLTAGE
30
25
OUTPUT CURRENT (mA)
20
15
10
MAX3094E
5
0
MAX3093E
0.9
OUTPUT LOW VOLTAGE (V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
I
OUT
= 8mA
MAX3093E
-40
OUTPUT CURRENT (mA)
-30
-20
MAX3094E
-10
MAX3094E
MAX3093E
0
0
1
2
3
4
5
OUTPUT LOW VOLTAGE (V)
0
1
2
3
4
5
-40
-15
10
35
60
85
OUTPUT HIGH VOLTAGE (V)
TEMPERATURE (°C)
OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX3093/94E-04
SUPPLY CURRENT vs. TEMPERATURE
MAX3093/94E-05
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX3093/94E-06
5
MAX3093E
OUTPUT HIGH VOLTAGE (V)
4
3.0
20
SHUTDOWN SUPPLY CURRENT (nA)
2.8
SUPPLY CURRENT (mA)
15
3
MAX3094E
2
2.6
MAX3093E/MAX3094E
2.4
10
MAX3093E
MAX3094E
5
1
I
OUT
= -8mA
-40
-15
10
35
60
85
2.2
0
2.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
TEMPERATURE (°C)
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
MAX3093E
PROPAGATION DELAY vs. TEMPERATURE
MAX3093/94E-07
MAX3094E
PROPAGATION DELAY vs. TEMPERATURE
⏐V
ID
⏐
= 3V
C
L
= 15pF
MAX3093/94E-08
120
⏐V
ID
⏐
= 3V
C
L
= 15pF
140
130
PROPAGATION DELAY (ns)
120
110
100
90
80
PROPAGATION DELAY (ns)
110
100
90
80
70
-40
-15
10
35
60
85
TEMPERATURE (°C)
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
MAX3093/94E-03
-50
1.0
5
