ADM3485E
SPECIFICATIONS
VCC = +3.3 V 0.3 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Symbol Min
Typ
Max Unit Test Conditions/Comments
DRIVER
Differential Outputs
Differential Output Voltage
VOD
2.0
1.5
1.5
V
V
V
V
V
V
mA
mA
RL = 100 Ω (RS-422) (see Figure 3)
RL = 54 Ω (RS-485) (see Figure 3)
RL = 60 Ω (RS-485) (see Figure 4)
RL = 54 Ω or 100 Ω (see Figure 3)
RL = 54 Ω or 100 Ω ( see Figure 3)
RL = 54 Ω or 100 Ω (see Figure 3)
VOUT = –7 V
∆|VOD| for Complementary Output States1 ∆VOD
0.2
3
0.2
Common-Mode Output Voltage
∆|VOC| for Complementary Output States1
Short-Circuit Output Current
VOC
∆VOC
IOSD
–250
2.0
250
0.8
VOUT = 12 V
Logic Inputs
Input Low Voltage
Input High Voltage
Logic Input Current
VIL
VIH
IIN1
V
DE, DI, RE
DE, DI, RE
DE, DI, RE
V
2
µA
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
Input Voltage Hysteresis
Input Resistance (A, B)
Input Current (A, B)
VTH
∆VTH
RIN
–0.2
+0.2
1.0
V
–7 V < VCM < +12 V
VCM = 0 V
–7 V < VCM < +12 V
DE = 0 V, VCC = 0 V or 3.6 V, VIN = 12 V
DE = 0 V, VCC = 0 V or 3.6 V, VIN = –7 V
50
mV
kΩ
mA
mA
12
IIN2
–0.8
RO Logic Output
Output Voltage High
Output Voltage Low
Short-Circuit Output Current
Tristate Output Leakage Current
POWER SUPPLY CURRENT
Voltage Range
VOH
VOL
IOSR
IOZR
VCC – 0.4 V
8
V
V
mA
µA
IOUT = –1.5 mA, VID = 200 mV (see Figure 5)
IOUT = 2.5 mA, VID = 200 mV (see Figure 5)
0 V < VRO < VCC
0.4
60
1
VCC = 3.6 V, 0 V < VOUT < VCC
VCC
ICC
3.0
3.6
2.2
V
mA
Supply Current
1.1
No load, DI = 0 V or VCC, DE = VCC
,
RE = 0 V or VCC
0.95
0.002
1.9
1
mA
µA
No load, DI = 0 V or VCC, DE = 0 V,
RE = 0 V
Shutdown Current
ISHDN
DE = 0 V, RE = VCC, DI = 0 V or VCC
ESD PROTECTION
A, B Pins
15
4
kV
kV
Human body model
Human body model
All Pins Except A, B
1 Δ|VOD| and Δ|VOC| are the changes in VOD and VOC, respectively, when DI input changes state.
Rev. D | Page 3 of 16
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