MAX14941 Datasheet, PDF (3/21 Pages) Maxim Integrated Products – 5kV Isolated 20Mbps Half-Duplex PROFIBUS

MAX14941/MAX14942
5kV Isolated 20Mbps Half-Duplex PROFIBUS/
RS-485 Transceivers with ±35kV ESD Protection
DC Electrical Characteristics (continued)
(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
SYMBOL
CONDITIONS
MIN TYP
Dropout Voltage
VLDO = 4.68V, IDDB = 120mA
100
Load Capacitance
Nominal value (Note 8)
1
LOGIC INTERFACE (TXD, RXD, DE, RE, SBA, PV, DEM)
Input High Voltage
Input Low Voltage
2.25V < VDDA <
0.7 x
VIH
RE, TXD, DE, PV ^5.5V
to GNDA
1.71V < VDDA <
VDDA
0.78 x
1.89V
VDDA
2.25V < VDDA <
VIL
RE, TXD, DE, PV 5.5V
to GNDA
1.71V < VDDA <
1.89V
Input Hysteresis
Input Capacitance
Input Pull-Up Current
Input Pull-Down Current
SBA Pull-Up Resistance
Output Voltage High
Output Voltage Low
Short Circuit Output Pull-Up
Current
VHYS
CIN
IPU
IPD
RSBA
VOH
VOL
ISH_PU
RE, TXD, DE, PV to GNDA
220
RE, TXD, DE, PV, f = 1MHz
2
TXD, PV
-10
-4.5
DE, RE
1.5
4.5
MAX14942 only
3
5
RXD to GNDA, IOUT = -4mA
MAX14941 only, DEM to GNDB,
IOUT = -4mA
RXD to GNDA, IOUT = 4mA
MAX14941 only, DEM to GNDB,
IOUT = 4mA
MAX14942 only, SBA to GNDA,
IOUT = 4mA
0V ≤ V_RXD ≤ V_DDA, RE = low
VDDA -
0.4
VDDB -
0.4
-42
MAX14941 only, 0V ≤ V_DEM ≤ V_DDB,
DE = high, PV = high
-42
Short Circuit Output Pull-Down
Current
ISH_PD
0V ≤ V_RXD ≤ V_DDA, RE = low
MAX14941 only, 0V ≤ V_DEM ≤ V_DDB,
DE = low, PV = high
MAX14942 only, 0V ≤ V_SBA ≤ V_DDA,
side B is powered and working
Tri-State Output Current
DRIVER
IOZ
0V ≤ V_RXD ≤ V_DDA, RE = high
-1
RL = 54Ω, TXD = high or low,
Figure 1a
2.1
Differential Driver Output
|VOD|
RL = 100Ω, TXD = high or low,
Figure 1a
2.9
-7V ≤ V_CM ≤ +12V, Figure 1b
1.5
MAX
180
10
0.8
0.6
-1.5
10
8
0.40
0.40
0.45
+40
+40
+60
+1
5
UNITS
mV
µF
V
V
mV
pF
µA
µA
kΩ
V
V
mA
mA
µA
V
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