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MAX3467CSA+T

P1-P3P4-P6P7-P9P10-P12P13-P13
General Description
The MAX3465–MAX3469 are high-speed differential
bus transceivers for RS-485 and RS-422 communica-
tions. They are designed to meet TIA/EIA-422-B,
TIA/EIA-485-A, V.11, and X.27 standards. The trans-
ceiver complies with the Profibus specification provid-
ing +2.1V minimum output level with a 54Ω load,
40Mbps data rate, and output skew less than 2ns. Each
part contains one three-state differential line driver and
one differential input line receiver. The devices operate
from a +5V supply and feature true fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted. This enables all
receiver outputs on a terminated bus to output logic
highs when all transmitters are disabled.
All devices feature a 1/4-standard-unit load receiver
input impedance that allows 128 transceivers on the
bus. Driver and receiver propagation delays are guar-
anteed under 20ns for multidrop, clock distribution
applications. Drivers are short-circuit current limited
and are protected against excessive power dissipation
by thermal-shutdown circuitry. The driver and receiver
feature active-high and active-low enables, respective-
ly, that can be connected together externally to serve
as a direction control.
Applications
High-Speed RS-485 Communications
High-Speed RS-422 Communications
Level Translators
Industrial-Control Local Area Networks
Profibus Applications
Features
♦ Recommended for Profibus Applications
♦ Up to 40Mbps Data Rate
♦ 15ns Transmitter Propagation Delay
♦ 20ns Receiver Propagation Delay
♦ 2ns Transmitter and Receiver Skew
♦ High Differential Driver Output Level (2.1V on 54Ω)
♦ Hot-Swap Versions
♦ 1µA Shutdown Supply Current
♦ Low Supply Current Requirements (2.5mA, typ)
♦ Allow Up to 128 Transceivers on the Bus
♦ True Fail-Safe Receiver while Maintaining EIA/TIA-
485 Compatibility
♦ Designed for Multipoint Transmissions on Long
or Noisy Bus Lines
♦ Full-Duplex and Half-Duplex Versions Available
♦ Phase Controls to Correct for Twisted-Pair
Reversal for 14-Pin Versions
♦ Current-Limiting and Thermal Shutdown for
Driver Overload Protection
MAX3465–MAX3469
+5V, Fail-Safe, 40Mbps, Profibus RS-485/
RS-422 Transceivers
Ordering Information
PART
NUMBER
HALF/FULL
DUPLEX
RECEIVER/
DRIVER
ENABLE
LOW-
POWER
SHUTDOWN
HOT SWAP
RECEIVER/
DRIVER PHASE
SELECT
INDEPENDENT
SHDN PIN
PIN COUNT
MAX3465 Full Yes Yes Yes Yes Yes 14
MAX3466 Full Yes Yes No Yes Yes 14
MAX3467 Full No No No No No 8
MAX3468 Half Yes Yes Yes No No 8
MAX3469 Half Yes Yes No No No 8
Selector Guide
19-3038; Rev 3; 5/12
1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information continued at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX3465CSD 0°C to +70°C 14 SO
MAX3465CPD 0°C to +70°C 14 Plastic DIP
MAX3465ESD -40°C to +85°C 14 SO
MAX3465EPD -40°C to +85°C 14 Plastic DIP
Pin Configurations appear at end of data sheet.
Devices are also available in a lead(Pb)-free/RoHS-compliant
package. Specify lead-free by adding “+” to the part number
when ordering.
MAX3465–MAX3469
+5V, Fail-Safe, 40Mbps, Profibus RS-485/
RS-422 Transceivers
2
ABSOLUTE MAXIMUM RATINGS
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)
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
) to GND ..................................-0.3V to +6V
Control Input Voltage (RE, DE, DI, SHDN, TXP, RXP)
to GND....................................................-0.3V to (V
CC
+ 0.3V)
Driver Output Voltage (Y, Z) to GND .........................-8V to +13V
Receiver Input Voltage (A, B) to GND.......................-8V to +13V
Differential Driver Output Voltage (Y - Z) ...............................±8V
Differential Receiver Input (A - B) ..........................................±8V
Receiver Output Voltage (RO) to GND.......-0.3V to (V
CC
+ 0.3V)
Output Driver Current (Y, Z) ...........................................±250mA
Continuous Power Dissipation (T
A
= +70°C)
SO (derate 5.88mW/°C above +70°C).........................471mW
DIP (derate 9.09mW/°C above +70°C) ........................727mW
SO (derate 8.33mW/°C above +70°C).........................667mW
DIP (derate 10mW/°C above +70°C) ...........................800mW
Operating Temperature Range
MAX346_C__ ......................................................0°C to +70°C
MAX346_E__....................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-Free..............................................................+260°C
Containing Lead(Pb)....................................................+240°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Range V
CC
4.75 5.25 V
DRIVER
Differential Driver Output
(No Load)
V
OD
Figure 5, R = ∞ V
CC
V
Differential Driver Output V
OD
Figure 5, R = 27Ω 2.1 V
Change in Magnitude of
Differential Output Voltage
ΔV
OD
Figure 5, R = 50Ω or 27Ω (Note 2) 0.2 V
Driver Common-Mode Output
Voltage
V
OC
Figure 5, R = 50Ω or 27Ω 3V
Change in Magnitude of
Common-Mode Voltage
ΔV
OC
Figure 5, R = 50Ω or 27Ω (Note 2) 0.2 V
Input High Voltage V
IH
DE, DI, RE, SHDN 2.0 V
Input Low Voltage V
IL
DE, DI, RE, SHDN 0.8 V
Input Hysteresis V
HYS
DE, DI, RE, SHDN 50 mV
V
IN
= +12V +125
Output Leakage (Y and Z) Full
Duplex
I
O
DE = GND, V
CC
=
GND or +5.25V
V
IN
= -7V -100
µA
Input Current I
IN
DI, RE, DE, SHDN ±1µA
Pulldown Current RXP = TXP = V
CC
51530µA
0 ≤ V
OUT
≤ +12V, output low +250
Driver Short-Circuit Output
Current (Note 3)
I
OSD
-7V ≤ V
OUT
≤ V
CC
, output high -250
mA
(V
CC
- 1V) ≤ V
OUT
≤ +12V, output low +25
Driver Short-Circuit Foldback
Output Current (Note 3)
I
OSFD
-7V ≤ V
OUT
≤ +1V, output high -25
mA
Thermal Shutdown Threshold 140 °C
RECEIVER
Differential Input Capacitance C
A, B
Between A and B 8 pF
V
IN
= +12V +250
Input Current (A and B) Full
Duplex
I
A, B
DE = GND,
V
CC
= GND or +5.25V
V
IN
= -7V -200
µA
MAX3465–MAX3469
+5V, Fail-Safe, 40Mbps, Profibus RS-485/
RS-422 Transceivers
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
Receiver Differential Threshold
Voltage
V
TH
-7V ≤ V
CM
≤ +12V -200 -125 -50 mV
Receiver Input Hysteresis ΔV
TH
V
CM
= 0 20 mV
Receiver Output High Voltage V
OH
I
O
= -4mA, V
A
- V
B
= V
TH
V
CC
- 1.5 V
Receiver Output Low Voltage V
OL
I
O
= 4mA, V
B
- V
A
= V
TH
0.4 V
Three-State Output Current at
Receiver
I
OZR
0 ≤ V
O
≤ V
CC
±1µA
Receiver Input Resistance R
IN
-7V ≤ V
CM
≤ +12V 48 kΩ
Receiver Output Short-Circuit
Current
I
OSR
0 ≤ V
RO
≤ V
CC
±7 ±95 mA
ESD Protection
A, B, Y, and Z pins
(MAX3467/MAX3468/MAX3469)
±6 kV
SUPPLY CURRENT
N or m al O p er ati on
( S tati c C ond i ti on)
I
Q
No load, DI = V
CC
or DI = GND 2.5 4 mA
Supply Current in SHDN I
SHDN
DE = GND and RE = V
CC
, or SHDN = V
CC
110µA
SWITCHING CHARACTERISTICS
t
PLH
Driver Propagation Delay
t
PHL
Figures 6 and 7, R
DIFF
= 54Ω,
C
L
= 50pF
15 ns
t
R
Driver Differential Output Rise or
Fall Time
t
F
Figures 6 and 7, R
DIFF
= 54Ω,
C
L
= 50pF
10 ns
Driver Output Skew |t
PLH
- t
PHL
|t
SKEW
Figures 6 and 7, R
DIFF
= 54Ω,
C
L
= 50pF, TXP = GND or open
2ns
Driver Output Transition Skew Guaranteed by design 1 ns
Maximum Data Rate 30 40 Mbps
Driver Enable to Output High t
ZH
Figures 8 and 9, S2 closed, R
L
= 500Ω,
C
L
= 50pF
30 ns
Driver Enable to Output Low t
ZL
Figures 8 and 9, S1 closed, R
L
= 500Ω,
C
L
= 50pF
30 ns
Driver Disable Time from Low t
LZ
Figures 8 and 9, S1 closed, R
L
= 500Ω,
C
L
= 50pF
30 ns
Driver Disable to Output High t
HZ
Figures 8 and 9, S2 closed, R
L
= 500Ω,
C
L
= 50pF
30 ns
Driver Enable Skew Time |t
ZL -
t
ZH
|
R
L
= 500Ω, C
L
= 50pF, S1 closed (Figures
8 and 9), output low
5ns
Driver Disable Skew Time |t
ZL -
t
ZH
|
R
L
= 500Ω, C
L
= 50pF, S2 closed (Figures
8 and 9), output high
5ns
t
PLH
Receiver Propagation Delay
t
PHL
Figure 10, C
L
= 15pF (Note 4) 20 ns
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX3467CSA+T

Mfr. #:
Buy MAX3467CSA+T
Manufacturer:
Maxim Integrated
Description:
RS-422/RS-485 Interface IC 5V Fail-Safe 40Mbps Profibus Tcvr
Lifecycle:
New from this manufacturer.
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