MAX14840E Ver la hoja de datos (PDF) - Maxim Integrated
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MAX14840E Datasheet PDF : 15 Pages
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40Mbps, +3.3V, RS-485 Half-Duplex
Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +3.6V, TA = -40NC to +125NC, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25NC.) (Notes 2, 3)
PARAMETER
Receiver Differential Threshold
Voltage (MAX14840E Only)
Receiver Input Hysteresis
(MAX14840E Only)
SYMBOL
VTHF
VTHR
CONDITIONS
-7V P VCM P 12V, VOD falling
-7V P VCM P 12V, VOD rising
VCM = 0V
MIN TYP MAX UNITS
-200
-10
mV
10
200
mV
20
170
mV
Receiver Differential Threshold
Voltage (MAX14841E Only)
VTH
-7V P VCM P 12V
-200 -105 -10
mV
Receiver Input Hysteresis
(MAX14841E Only)
LOGIC INTERFACE
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Current
Input Impedance on First
Transition
DVTH VCM = 0V
VIH
VIL
VHYS
IIN
DE, DI
RE
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE, RE
10
mV
2.0
5.5
V
2.0
0.8
V
50
mV
-1
+1
FA
1
10
kI
Output High Voltage
Output Low Voltage
Three-State Output Current at
Receiver
VOH
VOL
IOZR
RE = GND, IO = -1mA, VA - VB > 200mV
RE = GND, IO = 1mA, VA - VB < -200mV
RE = VCC, 0V P VO P VCC
VCC -
1.5
-1
V
0.4
V
+1
FA
Receiver Output Short-Circuit
Current
PROTECTION
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
ESD Protection: A, B to GND
ESD Protection: All Other Pins
IOSR 0V P VRO P VCC
TTS
TTSH
IEC 61000-4-2 Air Gap Discharge
IEC 61000-4-2 Contact Discharge
HBM
HBM
-95
+95
mA
160
NC
15
NC
Q20
Q12
kV
Q35
Q2
kV
SWITCHING 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 2, 3)
PARAMETER
DRIVER
Propagation Delay
Differential Driver Output Skew
|tDPLH - tDPHL|
Driver Differential Output Rise or
Fall Time
SYMBOL
CONDITIONS
tDPLH
tDPHL
tDSKEW
tHL, tLH
RL = 54I, CL = 50pF, Figures 2 and 3
(Note 5)
RL = 54I, CL = 50pF, Figures 2 and 3
(Notes 5, 8)
RL = 54I, CL = 50pF, Figures 2 and 3
(Notes 5, 8)
MIN TYP MAX UNITS
5
12
20
ns
5
12
20
2
ns
7.5
ns
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