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MAX14945 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 2.75kVRMS Isolated 500kbps Half-Duplex RS-485/RS-422 Transceiver - Maxim Integrated

भाग संख्या MAX14945
समारोह 2.75kVRMS Isolated 500kbps Half-Duplex RS-485/RS-422 Transceiver
मैन्युफैक्चरर्स Maxim Integrated 
लोगो Maxim Integrated लोगो 
पूर्व दर्शन
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<?=MAX14945?> डेटा पत्रक पीडीएफ

MAX14945 pdf
MAX14945
2.75kVRMS Isolated 500kbps Half-Duplex RS-485/
RS-422 Transceiver with ±30kV 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 to GNDA ............................................-0.3V to +6V
SBA, RXD to GNDA ................................ -0.3V to (VDDA+ 0.3V)
A, B to GNDB............................................................-8V to +13V
Short Circuit Duration (RXD, SBA to GNDA,
A, B, VDDB to GNDB).............................................Continuous
Continuous Power Dissipation (TA = +70°C)
16-pin Wide SOIC
(derate 14.1mW/°C above +70°C).......................... 1126.8mW
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
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 (θJA)...............71°C/W
Junction-to-Case Thermal Resistance (θJC)....................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
SYMBOL
VDDA
VDDB
IDDA
IDDB
VUVLOA
VUVLOB
VUVHYSTA
VUVHYSTB
CONDITIONS
VDDA = 5V, DE = high, RE = TXD =
low, RXD unconnected, no load
DE = high, RE = TXD = low, RXD
unconnected, no load, VDDB = 5V
VDDA rising
VDDB rising
MIN TYP MAX UNITS
1.71
4.5
1.50
2.55
4
6.3
1.58
2.7
50
200
5.5
5.5
6.6
12.5
1.65
2.85
V
mA
V
mV
LDO Supply Voltage
LDO Supply Current
LDO Output Voltage
LDO Current Limit
Load Regulation
Line Regulation
VLDO
ILDO
VDDB
Relative to GNDB, LDO is on (Note 4)
DE = high, RE = TXD = low, no load,
VLDO = 5.5V
4.68
4.5
VLDO = 5.68V, ILOAD = 20mA to
40mA
VLDO = 5.68V to 14V, ILOAD = 20mA
6.5
5
300
0.19
0.12
14 V
12.9
5.5
1.7
1.8
mA
V
mA
mV/mA
mV/V
www.maximintegrated.com
Maxim Integrated 2

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