MAX14938 Datasheet, PDF (2/22 Pages) Maxim Integrated Products – 2.75kVRMS Isolated 20Mbps Half-Duplex PROFIBUS

MAX14938/MAX14939
2.75kV_RMS Isolated 20Mbps Half-Duplex PROFIBUS/
RS-485 Transceivers with ±35kV ESD Protection
Absolute Maximum Ratings
VDDA to GNDA .......................................................-0.3V to +6V
VDDB to GNDB........................................................-0.3V to +6V
VLDO to GNDB......................................................-0.3V to +16V
TXD, DE, RE, PV to GNDA .....................................-0.3V to +6V
SBA, RXD to GNDA .............................. -0.3V to (VDDA + 0.3V)
DEM to GNDB ....................................... -0.3V to (VDDB + 0.3V)
A, B to GNDB............................................................-8V to +13V
Short Circuit Duration (RXD, SBA to GNDA,
A, B, DEM ,VDDB to GNDB)..................................Continuous
Continuous Power Dissipation (T_A = +70°C)
16-pin W SOIC (derate 14.1mW/°C
above +70°C).......................................................... 1126.8mW
Operating Temperature Range.......................... -40°C to +105°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°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.
Package Thermal Characteristics (Note 1)
Junction-to-Ambient Thermal Resistance (θ_JA)...............71°C/W
Junction-to-Case Thermal Resistance (θ_JC)....................23°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
DC Electrical Characteristics
(VDDA – VGNDA = 1.71V to 5.5V, VDDB – VGNDB = 4.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at VDDA – VGNDA = 3.3V, VDDB – VGNDB = 5V, VGNDA = VGNDB, and TA = +25°C.) (Notes 2, 3)
PARAMETER
POWER
Supply Voltage
Supply Current
Undervoltage-Lockout
Threshold
Undervoltage-Lockout
Threshold Hysteresis
LDO
LDO Supply Voltage
LDO Supply Current
LDO Output Voltage
LDO Current Limit
Load Regulation
Line Regulation
SYMBOL
CONDITIONS
MIN
V_DDA
V_DDB
I_DDA
I_DDB
V_UVLOA
V_UVLOB
V_UVHYSTA
V_UVHYSTB
VDDA = 5V, DE = high, RE = TXD = low,
RXD unconnected, no load
DE = high, RE = TXD = low, RXD
unconnected, no bus load, VDDB = 5V
VDDA rising
VDDB rising
1.71
4.5
1.50
2.55
TYP
4
7.6
1.58
2.7
50
200
MAX
5.5
5.5
6.6
12.5
1.65
2.85
UNITS
V
mA
V
mV
VLDO Relative to GNDB, LDO is on (Note 4) 4.68
14
V
ILDO
DE = high, TXD = low, no bus load,
VLDO = 5V
7.7
12.9
mA
VDDB
4.5
5
5.5
V
300
mA
VLDO = 5.68V, ILOAD = 20mA to
40mA
0.19
1.7
mV/mA
VLDO = 5.68V to 14V, ILOAD = 20mA
0.12
4.5
mV/V
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