MAX14840E_15 Datasheet, PDF (2/16 Pages) Maxim Integrated Products – 40Mbps, +3.3V, RS-485 Half-Duplex Transceivers

MAX14840E/MAX14841E 40Mbps, +3.3V, RS-485 Half-Duplex Transceivers
Absolute Maximum Ratings
(Voltages referenced to GND.)
VCC ...................................................................... -0.3V to +6.0V
RE, RO ................................................... -0.3V to +(VCC + 0.3V)
DE, DI................................................................... -0.3V to +6.0V
A, B..................................................................... -8.0V to +13.0V
Short-Circuit Duration (RO, A, B) to GND ................ Continuous
Continuous Power Dissipation (TA = +70NC)
8-Pin SO (derate 7.6mW/NC above +70NC) ................ 606mW
8-Pin TDFN (derate 24.4mW/NC above +70NC) ........ 1951mW
Junction-to-Case Thermal Resistance (BJC) (Note 1)
8-Pin SO........................................................................38NC/W
8-Pin TDFN .....................................................................8NC/W
Junction-to-Ambient Thermal Resistance (BJA) (Note 1)
8-Pin SO .....................................................................132NC/W
8-Pin TDFN ...................................................................41NC/W
Operating Temperature Range (Note 2) ......... -40NC to +125NC
Junction Temperature ................................................... +150NC
Storage Temperature Range .......................... -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow).......................................+260NC
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.
Note 2: Operation is specified with junction temperatures up to +150°C.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
DC Electrical Characteristics
(VCC = +3.0V to +3.6V, TA = -40NC to +125NC, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25NC.) (Notes 3, 4)
PARAMETER
POWER SUPPLY
Supply Voltage
Supply Current
Shutdown Supply Current
DRIVER
Differential Driver Output
Change in Magnitude of
Differential Output Voltage
Driver Common-Mode Output
Voltage
Change in Common-Mode
Voltage
Single-Ended Driver Output High
Single-Ended Driver Output Low
Driver Short-Circuit Output
Current
RECEIVER
Input Current (A and B)
Differential Input Capacitance
SYMBOL
V_CC
I_CC
I_SH
V_OD
DV_OD
V_OC
DV_O­ _C
V_OH
V_OL
|I_OSD|
I_A,B
C_A,B
CONDITIONS
DE = RE = V_CC, or
DE = RE = GND, or
DE = V_CC, RE = GND,
DI = V_CC or GND, no load
DE = GND and RE = V_CC
R_L = 54I, Figure 1
R_L = 54I, Figure 1 (Note 5)
R_L = 54I, Figure 1
R_L = 54I, Figure 1 (Note 5)
A/B output, I_OUT = -20mA
A/B output, I_OUT = 20mA
0V P V_OUT P +12V, output low
-7V P V_OUT P V_CC, output high
DE = GND,
V_IN = +12V
V_CC = GND or +3.6V
V_IN = -7V
Between A and B, DE = GND, f = 2MHz
MIN TYP MAX UNITS
3.0
3.6
V
1.5
4
mA
10
FA
1.5
V
-0.2
0
+0.2
V
V_CC/2
3
V
-0.2
0.2
V
2.2
V
0.8
V
250
mA
250
-800
1000
FA
12
pF
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