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
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, Z, Y to GNDB ..................................................-8V to +13V
Short Circuit Duration (RXD,
SBA
to GNDA,
A, B, Y, Z ,VDDB to GNDB) ...................................Continuous
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 = 3.0V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at VDDA – VGNDA = 3.3V, VDDB – VGNDB = 3.3V, VGNDA = VGNDB, and TA = +25°C.) (Notes 2, 3)
PARAMETER
POWER
Supply Voltage
V
DDA
V
DDB
I
DDA
I
DDB
Undervoltage-Lockout
Threshold
Undervoltage-Lockout
Threshold Hysteresis
LDO
LDO Supply Voltage
LDO Supply Current
LDO Output Voltage
LDO Current Limit
Load Regulation
Line Regulation
Dropout Voltage
VLDO = 3.3V, ILOAD = 20mA to 40mA
VLDO = 3.3V to 14V, ILOAD = 20mA
VLDO = 3.18V, IDDB = -120mA
VLDO
ILDO
VDDB
Relative to GNDB, LDO is on (Note 4)
DE = high, TXD = low, no bus load,
VLDO = 5.5V
3.0
3.18
7.5
3.3
300
0.19
0.12
100
1.7
1.8
180
14
12.9
3.6
V
mA
V
mA
mV/mA
mV/V
mV
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 = 3.3V
VDDA rising
VDDB rising
1.50
2.55
1.71
3.0
3.9
7
1.58
2.7
50
200
5.5
5.5
6.6
mA
12.5
1.65
2.85
V
mV
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current
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Maxim Integrated
│
2
MAX14856/MAX14858
5kV
RMS
Isolated 500kbps/25Mbps Full-Duplex
RS-485/RS-422 Transceivers
with ±35kV ESD Protection
DC Electrical Characteristics (continued)
(VDDA – VGNDA = 1.71V to 5.5V, VDDB – VGNDB = 3.0V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at VDDA – VGNDA = 3.3V, VDDB – VGNDB = 3.3V, VGNDA = VGNDB, and TA = +25°C.) (Notes 2, 3)
PARAMETER
Load Capacitance
SYMBOL
CONDITIONS
Nominal value (Note 7)
2.25V
≤
VDDA
≤
5.5V
1.71V
≤
VDDA
≤
1.89V
2.25V
≤
VDDA
≤
5.5V
1.71V
≤
VDDA
≤
1.89V
220
2
-10
1.5
3
RXD to GNDA, IOUT = -4mA
RXD to GNDA, IOUT = 4mA
SBA
to GNDA, IOUT = 4mA
0V ≤ V
RXD
≤ V
DDA, (VA - VB) > -10mV,
RE
= low
0V ≤ V
RXD
≤ V
DDA, (VA - VB) <
-200mV,
RE
= low
0V ≤ V
SBA
≤ V
DDA, side B is powered
and working
0V ≤ V
RXD
≤ V
DDA,
RE
= high
RL
= 54Ω, TXD = high or low, Figure 1a
Differential Driver Output
|VOD|
RL
= 100Ω, TXD = high or low, Figure 1a
-7V
≤
VCM
≤
+12V, Figure 1b
Change in Magnitude of Differential
Driver Output Voltage
Driver Common Mode Output
Voltage
Change in Magnitude of
Common-Mode Voltage
ΔV
OD
VOC
ΔV
OC
RL = 100Ω
or 54Ω, Figure 1a (Note 5)
RL = 100Ω
or 54Ω, Figure 1a (Note 5)
RL = 100Ω
or 54Ω, Figure 1a (Note 5)
VDDB/
2
-1
-42
40
mA
60
+1
µA
VDDA
-0.4
0.40
0.45
-4.5
4.5
5
-1.5
10
8
MIN
1
0.7 x
VDDA
0.78 x
VDDA
0.8
V
0.6
mV
pF
µA
µA
kΩ
V
V
mA
TYP
MAX
10
UNITS
µF
LOGIC INTERFACE (TXD, RXD, DE,
RE, SBA)
Input High Voltage
VIH
RE,
TXD, DE to
GNDA
V
Input Low Voltage
Input Hysteresis
Input Capacitance
Input Pullup Current
Input Pulldown Current
SBA
Pullup Resistance
Output Voltage High
Output Voltage Low
Short-Circuit Output Pullup
Current
Short-Circuit Output Pulldown
Current
VIL
VHYS
CIN
IPU
IPD
RSBA
VOH
VOL
ISH_PU
RE,
TXD, DE to
GNDA
RE,
TXD, DE to GNDA
RE,
TXD, DE, f = 1MHz
TXD
DE,
RE
ISH_PD
Three-State Output Current
DRIVER
IOZ
1.5
2.0
1.5
5
0.2
3
0.2
V
V
V
V
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Maxim Integrated
│
3
MAX14856/MAX14858
5kV
RMS
Isolated 500kbps/25Mbps Full-Duplex
RS-485/RS-422 Transceivers
with ±35kV ESD Protection
DC Electrical Characteristics (continued)
(VDDA – VGNDA = 1.71V to 5.5V, VDDB – VGNDB = 3.0V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at VDDA – VGNDA = 3.3V, VDDB – VGNDB = 3.3V, VGNDA = VGNDB, and TA = +25°C.) (Notes 2, 3)
PARAMETER
Driver Short-Circuit Output
Current
Single-Ended Driver Output
Voltage High
Single-Ended Driver Output
Voltage Low
Differential Driver Output
Capacitance
RECEIVER
Input Current (A and B)
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis
Receiver Input Resistance
Differential Input Capacitance
PROTECTION
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
ESD Protection
(A and B Pins to GNDB)
ESD Protection (All Other Pins)
T
SHDN
T
HYST
Human Body Model
IEC 61000-4-2 Air Gap Discharge
IEC 61000-4-2 Contact Discharge
Human Body Model
Temperature Rising
+160
15
±35
±18
±8
±4
kV
kV
°C
°C
IA, IB
VTH
ΔV
TH
RIN
CA,B
DE = low, VDDB
= GNDB or 3.6V
-7V ≤ V
CM
≤ +12V
VCM = 0V
-7V ≤ V
CM
≤ +12V, DE = low
Measured between A and B, DE =
RE
=
low at 6MHz
48
12
VIN = +12V
VIN = -7V
+250
-200
-200
-120
20
-10
µA
mV
mV
kΩ
pF
SYMBOL
IOSD
CONDITIONS
GNDB ≤ V
OUT
≤ +12V, output low (Note
6)
-7V ≤ V
OUT
≤ V
DDB, output high (Note 6)
VOH
VOL
COD
Y and Z outputs, IY,Z = -20mA
Y and Z outputs, IY,Z = +20mA
DE =
RE
= high, f = 4MHz
12
MIN
+30
-250
2.2
0.8
TYP
MAX
+250
-30
V
V
pF
UNITS
mA
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Maxim Integrated
│
4
MAX14856/MAX14858
5kV
RMS
Isolated 500kbps/25Mbps Full-Duplex
RS-485/RS-422 Transceivers
with ±35kV ESD Protection
Switching Electrical Characteristics (MAX14856)
(VDDA – VGNDA = 1.71V to 5.5V, VDDB – VGNDB = 3.0V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at VDDA – VGNDA = 3.3V, VDDB – VGNDB = 3.3V, VGNDA = VGNDB, and TA = +25°C.) (Notes 2, 3)
stm32/stm8
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