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MAX13488EESA+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
General Description
The MAX13487E/MAX13488E +5V, half-duplex, ±15kV
ESD-protected RS-485/RS-422-compatible transceivers
feature one driver and one receiver. The MAX13487E/
MAX13488E include a hot-swap capability to eliminate
false transitions on the bus during power-up or live
insertion.
The MAX13487E/MAX13488E feature Maxim’s propri-
etary AutoDirection control. This architecture makes the
devices ideal for applications, such as isolated RS-485
ports, where the driver input is used in conjunction with
the driver-enable signal to drive the differential bus.
The MAX13487E features reduced slew-rate drivers
that minimize EMI and reduce reflections caused by
improperly terminated cables, allowing error-free trans-
mission up to 500kbps. The MAX13488E driver slew
rate is not limited, allowing transmit speeds up to
16Mbps.
The MAX13487E/MAX13488E feature a 1/4-unit load
receiver input impedance, allowing up to 128 trans-
ceivers on the bus. These devices are intended for half-
duplex communications. All driver outputs are
protected to ±15kV ESD using the Human Body Model.
The MAX13487E/MAX13488E are available in an 8-pin
SO package. The devices operate over the extended
-40°C to +85°C temperature range.
Applications
Isolated RS-485 Interfaces
Utility Meters
Industrial Controls
Industrial Motor Drives
Automated HVAC Systems
Features
♦ +5V Operation
♦ AutoDirection Enables Driver Automatically on
Transmission
♦ Hot-Swappable for Telecom Applications
♦ Enhanced Slew-Rate Limiting Facilitates Error-
Free Data Transmission (MAX13487E)
♦ High-Speed Version (MAX13488E) Allows for
Transmission Speeds Up to 16Mbps
♦ Extended ESD Protection for RS-485 I/O Pins
±15kV Human Body Model
♦ 1/4-Unit Load, Allowing Up to 128 Transceivers on
the Bus
♦ 8-Pin SO Package
MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
________________________________________________________________
Maxim Integrated Products
1
19-0740; Rev 0; 1/07
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.
EVALUATION KIT
AVAILABLE
Ordering Information/
Selector Guide
PART
PIN-
PACKAGE
SLEW-RATE
LIMITED
PKG
CODE
MAX13487EESA+ 8 SO Yes S8-2
MAX13488EESA+ 8 SO No S8-2
+
Denotes a lead-free package
Note: All devices operate over the -40°C to +85°C temperature
range.
Pin Configuration/Typical Application Circuit appear at end
of data sheet.
V
CC
8
-
+
+
-
STATE
MACHINE
D
R
A
B
RE
DI
RO
COM
DE
RE
GND
SHDN
1
3
2
4
6
7
5
RI
DI
V
DT
MAX13487E
MAX13488E
Functional Diagram
MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
(All voltages referenced to GND.)
Supply Voltage V
CC
...............................................................+6V
SHDN, RE, DI..............................................................-0.3V to +6
A, B........................................................................... -8V to +13V
Short-Circuit Duration (RO, A, B) to GND ..................Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering 10s) ..................................+300°C
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DRIVER
R
DIFF
= 100Ω, Figure 1 2.0 V
CC
R
DIFF
= 54Ω, Figure 1 1.5Differential Driver Output V
OD
No load V
CC
V
Driver Common-Mode Output
Voltage
V
OC
R
L
= 100Ω or 54Ω, Figure 1 V
CC
/ 2 3 V
Driver Disable Threshold V
DT
Figure 2 (Note 2) +0.6 +1 V
Input-High Voltage V
IH
DI, SHDN, RE 2.0 V
Input-Low Voltage V
IL
DI, SHDN, RE 0.8 V
Input Current I
IN
DI, SHDN, RE ±1 µA
0V ≤ V
OUT
≤ +12V +50 +250
Driver Short-Circuit Output
Current
(Note 3)
I
OSD
-7V ≤ V
OUT
≤ 0V -250 -50
mA
(V
CC
- 1V) ≤ V
OUT
≤ +12V 20 mA
Driver Short-Circuit Foldback
Output Current (Note 3)
I
OSDF
-7V ≤ V
OUT
≤ 0V -20
RECEIVER
V
IN
= +12V 250
Input Current
(A and B)
I
A, B
DI = V
CC
, V
CC
= GND or +5V
V
IN
= -7V -200
µA
Receiver Differential Threshold
Voltage
V
TH
-7V ≤ V
CM
≤ +12V -200 +200 mV
Receiver Input Hysteresis ΔV
TH
V
A
+ V
B
= 0V 25 mV
Output-High Voltage V
OH
I
O
= -1.6mA, V
A
- V
B
> V
TH
V
CC
-
1.5
V
Output-Low Voltage V
OL
I
O
= 1mA, V
A
- V
B
< -V
TH
0.4 V
Tri-State Output Current at
Receiver
I
OZR
0V ≤ V
O
≤ V
CC
±1 µA
Receiver Input Resistance R
IN
-7V ≤ V
CM
≤ +12V 48 kΩ
Receiver Output Short-Circuit
Current
I
OSR
0V ≤ V
RO
≤ V
CC
±7 ±95 mA
MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Supply Voltage V
CC
4.75 5.25 V
Supply Current I
CC
SHDN = 1, RE = 0, no load 4.5 mA
Shutdown Supply Current I
SHDN
SHDN = 0 10 µA
ESD PROTECTION
Air Gap Discharge IEC 61000-4-2
(MAX13487E)
±15
ESD Protection (A, B)
Human Body Model ±15
kV
ESD Protection (All Other Pins) Human Body Model ±2 kV
SWITCHING CHARACTERISTICS—MAX13487E
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DRIVER
t
DPLH
200 1000
Driver Propagation Delay
t
DPHL
R
L
= 110Ω, C
L
= 50pF, Figures 2 and 3
200 1000
ns
t
HL
200 900
Driver Differential Output Rise or
Fall Time
t
LH
R
L
= 110Ω, C
L
= 50pF, Figures 2 and 3
200 900
ns
Maximum Data Rate 500 kbps
Driver Disable Delay t
DDD
Figure 3 2500 ns
Driver Enable from Shutdown to
Output High
t
DZH
(
SHDN
)
Figure 4 5.5 µs
Driver Enable from Shutdown to
Output Low
t
DZL
(
SHDN
)
Figure 4 5.5 µs
Time to Shutdown t
SHDN
50 340 700 ns
RECEIVER
t
RPLH
80
Receiver Propagation Delay
t
RPHL
C
L
= 15pF, Figures 5 and 6
80
ns
Receiver Output Skew t
RSKEW
C
L
= 15pF, Figure 6 13 ns
Maximum Data Rate 500 kbps
Receiver Enable to Output High t
RZH
Figure 7 50 ns
Receiver Enable to Output Low t
RZL
Figure 7 50 ns
Receiver Disable Time from High t
RHZ
Figure 7 50 ns
Receiver Disable Time from Low t
RLZ
Figure 7 50 ns
Receiver Enable from Shutdown
to Output High
t
RZH
(SHDN)
Figure 8 2200 ns
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX13488EESA+

Mfr. #:
Buy MAX13488EESA+
Manufacturer:
Maxim Integrated
Description:
RS-422/RS-485 Interface IC Half-Dplx RS-485/422 5V 16Msps LD/Rc
Lifecycle:
New from this manufacturer.
Delivery:
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