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MAX3490EESA-T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
General Description
Devices in the MAX3483E family (MAX3483E/MAX3485E/
MAX3486E/MAX3488E/MAX3490E/MAX3491E) are
±15kV ESD-protected, +3.3V, low-power transceivers for
RS-485 and RS-422 communications. Each device con-
tains one driver and one receiver. The MAX3483E and
MAX3488E feature slew-rate-limited drivers that minimize
EMI and reduce reflections caused by improperly termi-
nated cables, allowing error-free data transmission at
data rates up to 250kbps. The partially slew-rate-limited
MAX3486E transmits up to 2.5Mbps. The MAX3485E,
MAX3490E, and MAX3491E transmit at up to 12Mbps.
All devices feature enhanced electrostatic discharge
(ESD) protection. All transmitter outputs and 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.
Drivers are short-circuit current limited and are protect-
ed against excessive power dissipation by thermal
shutdown circuitry that places the driver outputs into a
high-impedance state. The receiver input has a fail-safe
feature that guarantees a logic-high output if both
inputs are open circuit.
The MAX3488E, MAX3490E, and MAX3491E feature
full-duplex communication, while the MAX3483E,
MAX3485E, and MAX3486E are designed for half-
duplex communication.
Applications
Telecommunications
Industrial-Control Local Area Networks
Transceivers for EMI-Sensitive Applications
Integrated Services Digital Networks
Packet Switching
Features
♦ ESD Protection for RS-485 I/O Pins
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
♦ Operate from a Single +3.3V Supply—
No Charge Pump Required
♦ Interoperable with +5V Logic
♦ Guaranteed 12Mbps Data Rate
(MAX3485E/MAX3490E/MAX3491E)
♦ Slew-Rate Limited for Errorless Data Transmission
(MAX3483E/MAX3488E)
♦ 2nA Low-Current Shutdown Mode
(MAX3483E/MAX3485E/MAX3486E/MAX3491E)
♦ -7V to +12V Common-Mode Input Voltage Range
♦ Full-Duplex and Half-Duplex Versions Available
♦ Industry-Standard 75176 Pinout
(MAX3483E/MAX3485E/MAX3486E)
♦ Current-Limiting and Thermal Shutdown for
Driver Overload Protection
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
________________________________________________________________
Maxim Integrated Products
1
19-1474; Rev 0; 4/99
PART
MAX3483ECSA
MAX3483ECPA 0°C to +70°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
8 SO
8 Plastic DIP
PART
NUMBER
GUARANTEED
DATA RATE
(Mbps)
SUPPLY
VOLTAGE
(V)
HALF/FULL
DUPLEX
SLEW-RATE
LIMITED
DRIVER/
RECEIVER
ENABLE
SHUTDOWN
CURRENT
(nA)
PIN
COUNT
MAX3483E 0.25 Half Yes Yes 2 8
MAX3485E 12 Half No Yes 2 8
MAX3486E 2.5 Half Yes Yes 2 8
MAX3488E 0.25 Full Yes No — 8
MAX3490E 12 Full No No — 8
MAX3491E 12
3.0 to 3.6
Full No Yes 2 14
Selector Guide
MAX3483EESA
MAX3483EEPA -40°C to +85°C
-40°C to +85°C 8 SO
8 Plastic DIP
MAX3485ECSA
MAX3485ECPA 0°C to +70°C
0°C to +70°C 8 SO
8 Plastic DIP
MAX3485EESA
MAX3485EEPA -40°C to +85°C
-40°C to +85°C 8 SO
8 Plastic DIP
Ordering Information
Ordering Information continued at end of data sheet.
±15kV
ESD
PROTECTION
Yes
Yes
Yes
Yes
Yes
Yes
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +3.3V ±0.3V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°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.
Supply Voltage (V
CC
).............................................................+7V
Control Input Voltage (
RE, DE).................................-0.3V to +7V
Driver Input Voltage (DI)...........................................-0.3V to +7V
Driver Output Voltage (A, B, Y, Z).......................-7.5V to +12.5V
Receiver Input Voltage (A, B)..............................-7.5V to +12.5V
Receiver Output Voltage (RO)....................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW
14-Pin SO (derate 8.33mW/°C above +70°C)................667mW
14-Pin Plastic DIP (derate 10mW/°C above +70°C) ......800mW
Operating Temperature Ranges
MAX34_ _ EC_ _ ...................................................0°C to +70°C
MAX34_ _ EE_ _.................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
DE = 0,
V
CC
= 0 or 3.6V
DE = 0, RE = V
CC
,
V
CC
= 0 or 3.6V, MAX3491E
DE = 0, RE = 0,
V
CC
= 0 or 3.6V, MAX3491E
kΩ12R
IN
Receiver Input Resistance
µA±1I
OZR
Three-State (High-Impedance)
Output Current at Receiver
V0.4V
OL
Receiver Output Low Voltage
VV
CC
- 0.4V
OH
Receiver Output High Voltage
mV50∆V
TH
Receiver Input Hysteresis
V-0.2 0.2V
TH
Receiver Differential
Threshold Voltage
µA
-1
I
O
Output Leakage (Y, Z)
in Shutdown Mode
1
µA
-20
I
O
Output Leakage (Y, Z)
V0.2∆V
OD
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
(Note 1)
V
1.5
V
OD
2.0
Differential Driver Output
20
mA
-0.8
I
IN2
Input Current (A, B)
1.0
µA±2I
IN1
Logic Input Current
V3V
OC
Driver Common-Mode Output
Voltage
V0.2∆V
OC
Change in Magnitude of
Common-Mode Output Voltage
(Note 1)
V2.0V
IH
Input High Voltage
V0.8V
IL
Input Low Voltage
UNITS
MIN TYP MAX
SYMBOLPARAMETER
R
L
= 54Ω or 100Ω, Figure 4
-7V ≤ V
CM
≤ 12V
R
L
= 54Ω (RS-485), Figure 4
V
CC
= 3.6V, 0 ≤ V
OUT
≤ V
CC
R
L
= 100Ω (RS-422), Figure 4
I
OUT
= 2.5mA, V
ID
= 200mV, Figure 6
I
OUT
= -1.5mA, V
ID
= 200mV, Figure 6
V
CM
= 0
V
OUT
= 12V
V
IN
= -7V
-7V ≤ V
CM
≤ 12V
V
OUT
= -7V
V
IN
= 12V
DE, DI, RE
R
L
= 54Ω or 100Ω, Figure 4
R
L
= 54Ω or 100Ω, Figure 4
DE, DI, RE
V
OUT
= 12V
DE, DI, RE
V
OUT
= -7V
CONDITIONS
R
L
= 60Ω (RS-485), V
CC
= 3.3V, Figure 5
1.5
mA
1.1 2.2
I
CC
Supply Current
No load,
DI = 0 or V
CC
DE = V
CC
, RE = 0 or V
CC
DE = 0, RE = 0
0.95 1.9
V3.0 3.6V
CC
Supply Voltage Range
µA0.002 1I
SHDN
Supply Current in Shutdown Mode
DE = 0, RE = V
CC
, DI = V
CC
or 0
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
_______________________________________________________________________________________ 3
mA
-250
I
OSD
250
Driver Short-Circuit Output Current
mA±8 ±60I
OSR
Receiver Short-Circuit Output Current
UNITSMIN TYP MAXSYMBOLPARAMETER
V
OUT
= -7V
V
OUT
= 12V
0 ≤ V
RO
≤ V
CC
CONDITIONS
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.3V ±0.3V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
ns72335t
PLH
Driver Propagation Delay, Low-to-High Level
ns31125t
TD
Mbps12 15Maximum Data Rate
Driver Differential Output Transition Time
ns650 900t
PSH
Driver-Output Enable Time from Shutdown to High Level
ns650 900t
PSL
Driver-Output Enable Time from Shutdown to Low Level
ns35 80t
PHZ
Driver-Output Disable Time from High Level
ns72335t
PHL
Driver Propagation Delay, High-to-Low Level
ns-1.4 ±8t
PDS
|
t
PLH
- t
PHL|
Driver Propagation-Delay Skew (Note 2)
ns42 90t
PZL
Driver-Output Enable Time to Low Level
ns42 90t
PZH
Driver-Output Enable Time to High Level
UNITSMIN TYP MAXSYMBOLPARAMETER
R
L
= 27Ω, Figure 8
R
L
= 60Ω, Figure 7
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
CONDITIONS
DRIVER SWITCHING CHARACTERISTICS—MAX3485E/MAX3490E/MAX3491E
(V
CC
= +3.3V, T
A
= +25°C.)
ns35 80t
PLZ
Driver-Output Disable Time from Low Level R
L
= 110Ω, Figure 10
DRIVER SWITCHING CHARACTERISTICS—MAX3486E
(V
CC
= +3.3V, T
A
= +25°C.)
ns40 80t
PLZ
Driver-Output Disable Time from Low Level R
L
= 110Ω, Figure 10
ns20 42 75t
PLH
Driver Propagation Delay, Low-to-High Level
ns15 28 60t
TD
Mbps2.5Maximum Data Rate
Driver Differential Output Transition Time
ns700 1000t
PSH
Driver-Output Enable Time from Shutdown to High Level
ns700 1000t
PSL
Driver-Output Enable Time from Shutdown to Low Level
ns40 80t
PHZ
Driver-Output Disable Time from High Level
ns20 42 75t
PHL
Driver Propagation Delay, High-to-Low Level
ns-6 ±12t
PDS
|
t
PLH
- t
PHL|
Driver Propagation-Delay Skew (Note 2)
ns52 100t
PZH
Driver-Output Enable Time to High Level
UNITSMIN TYP MAXSYMBOLPARAMETER
R
L
= 27Ω, Figure 8
R
L
= 60Ω, Figure 7
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 110Ω, Figure 9
CONDITIONS
±15IEC 1000-4-2 Air Discharge
±6
IEC 1000-4-2 Contact Discharge
(MAX3490E, MAX3488E)*
±8
IEC 1000-4-2 Contact Discharge
(MAX3483E, MAX3485E,
MAX3486E, MAX3491E)
ns12235t
DD
Driver Differential Output Delay R
L
= 60Ω, Figure 7
DRIVER-OUTPUT ENABLE/DISABLE TIMES (MAX3485E/MAX3491E only)
ns20 42 70t
DD
Driver Differential Output Delay R
L
= 60Ω, Figure 7
ESD Protection for Y, Z, A, B
±15Human Body Model
kV
*
MAX3488E and MAX3491E will be compliant to ±8kV per IEC 1000-4-2 Contact Discharge by September 1999.
ns52 100t
PZL
Driver-Output Enable Time to Low Level R
L
= 110Ω, Figure 10
DRIVER-OUTPUT ENABLE/DISABLE TIMES
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MAX3490EESA-T

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Buy MAX3490EESA-T
Manufacturer:
Maxim Integrated
Description:
RS-422/RS-485 Interface IC 3.3V 12Mbps Transceive
Lifecycle:
New from this manufacturer.
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