ADM2484E
SPECIFICATIONS
All voltages are relative to their respective grounds, 3.0 k ≤ kDD± ≤ 1.1 k and 3.0 k ≤ kDD2 ≤ 3.6 k, all minimum/maximum specifications
apply over the entire recommended operation range, all typical specifications are at TA = 21°C, kDD± = 1 k, and kDD2 = 3.3 k, unless
otherwise noted.
Table 1.
Parameter
Symbol Min
Typ
Max
Unit
Test Conditions
SUPPLY CURRENT
Power Supply Current, Logic Side
TxD/RxD Data Rate = 500 kbps
IDD1
2.0
2.0
mA
mA
Unloaded
VDD2 = 5.5 V, half duplex configuration,
RTERMINATION = 120 Ω, see Figure 20
Power Supply Current, Bus Side
TxD/RxD Data Rate = 500 kbps
IDD2
3.0
40
mA
mA
Unloaded
VDD2 = 5.5 V, half duplex configuration,
R
TERMINATION = 120 Ω, see Figure 20
DRIVER
Differential Outputs
Differential Output Voltage
|VOD|
2.0
3.6
V
Loaded, RL = 100 Ω (RS-422), see
Figure 14
1.5
1.5
3.6
3.6
0.2
3.0
0.2
+30
V
V
V
V
RL = 54 Ω (RS-485), see Figure 14
−7 V ≤ VTEST ≤ 12 V, see Figure 15
RL = 54 Ω or 100 Ω, see Figure 14
RL = 54 Ω or 100 Ω, see Figure 14
RL = 54 Ω or 100 Ω, see Figure 14
DE = 0 V, VDD2 = 0 V or 5 V, VIN = +12 V
DE = 0 V, VDD2 = 0 V or 5 V, VIN = −7 V
∆|VOD| for Complementary Output States
Common-Mode Output Voltage
∆|VOD|
VOC
∆|VOC| for Complementary Output States
Output Leakage Current (Y, Z Pins)
∆|VOC|
IO
V
μA
μA
mA
−30
Short-Circuit Output Current
Logic Inputs (DE, RE, TxD)
Input Threshold Low
Input Threshold High
Input Current
IOS
250
VIL
VIH
II
0.25 × VDD1
−10
V
V
μA
0.7 × VDD1
+10
+0.01
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
Input Voltage Hysteresis
Input Current (A, B)
VTH
VHYS
II
−200
−125
15
−30
mV
mV
μA
μA
kΩ
μA
−7 V < VCM < +12 V
VOC = 0 V
DE = 0 V, VDD = 0 V or 3.6 V, VIN = +12 V
DE = 0 V, VDD = 0 V or 3.6 V, VIN = −7 V
−7 V < VCM < +12 V
+125
−100
96
Line Input Resistance
Tristate Leakage Current
Logic Outputs
RIN
IOZR
1
VDD1 = 5 V, 0 V < VOUT < VDD1
Output Voltage Low
Output Voltage High
Short-Circuit Current
VOLRxD
VOHRxD
0.2
VDD1 − 0.2
0.4
100
V
V
mA
IORxD = 1.5 mA, VA − VB = −0.2 V
IORxD = −1.5 mA, VA − VB = +0.2 V
VDD1 − 0.3
25
COMMON-MODE TRANSIENT IMMUNITY1
kV/μs VCM = 1 kV, transient magnitude = 800 V
1 CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential
difference between the logic and bus sides. The transient magnitude is the range over which the common mode is slewed. The common-mode voltage slew rates
apply to both rising and falling common-mode voltage edges.
Rev. 0 | Page 3 of 16
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