MAX14948 Datasheet, PDF (3/21 Pages) Maxim Integrated Products – 5kVRMS Isolated 500kbps Half-Duplex RS-485

MAX14948
5kV_RMS Isolated 500kbps Half-Duplex RS-485/
RS-422 Transceiver with ±30kV 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
Load Capacitance
SYMBOL
CONDITIONS
Nominal value (Note 6)
LOGIC INTERFACE (TXD, RXD, DE, RE, SBA)
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Capacitance
Input Pullup Current
Input Pulldown Current
SBA Pullup Resistance
VIH
VIL
VHYS
CIN
IPU
IPD
RSBA
RE, TXD, DE to
GNDA
2.25V ≤ V_DDA ≤
5.5V
1.71V ≤ V_DDA ≤
1.89V
RE, TXD, DE to
GNDA
2.25V ≤ V_DDA ≤
5.5V
1.71V ≤ V_DDA ≤
1.89V
RE, TXD, DE to GNDA
RE, TXD, DE, f = 1MHz
TXD
DE, RE
Output Voltage High
VOH
RXD to GNDA, IOUT = -4mA
Output Voltage Low
Short-Circuit Output Pullup
Current
Short-Circuit Output Pulldown
Current
Tri-State Output Current
DRIVER
Differential Driver Output
Change in Magnitude of Differential
Driver Output Voltage
Driver Common Mode Output
Voltage
Change in Magnitude of
Common-Mode Voltage
VOL
ISH_PU
ISH_PD
IOZ
|VOD|
ΔV_OD
VOC
ΔV_OC
RXD to GNDA, IOUT = 4mA
SBA to GNDA, IOUT = 4mA
0V ≤ V_RXD ≤ V_DDA, (VA - VB) >
-50mV, 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, DE =
high, Figure 1a
RL = 100Ω, TXD = high or low, DE =
high, Figure 1a
-7V ≤ V_CM ≤ +12V, Figure 1b
RL = 54Ω (Note 5)
RL = 54Ω
RL = 54Ω, (Note 5)
MIN TYP
1
0.7 x
VDDA
0.78 x
VDDA
220
2
-10
-4.5
1.5
4.5
3
5
VDDA
-0.4
-42
-1
2
3
1.5
V_DDB/2
MAX
10
0.8
0.6
-1.5
10
8
0.40
0.45
+40
+60
+1
5
0.2
3
0.2
UNITS
µF
V
V
mV
pF
µA
µA
kΩ
V
V
mA
mA
µA
V
V
V
V
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