ADM3232E
Rev. B | Page 3 of 12
SPECIFICATIONS
VCC = 3.3 V ± 0.3 V, C1 to C4 = 0.1 μF; all specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DC CHARACTERISTICS
Operating Voltage Range
3.0
3.3
5.5
V
VCC Power Supply Current
1.3
3
mA
No load
LOGIC
Input Logic Threshold Low, VINL
0.8
V
TIN
Input Logic Threshold High, VINH
2.0
V
TIN
TTL/CMOS Output Voltage Low, VOL
0.4
V
IOUT = 1.6 mA
TTLCMOS Output Voltage High, VOH
VCC 0.6
V
IOUT =
1 mA
Logic Pull-Up Current
5
10
μA
TIN = GND to VCC
Transmitter Input Hysteresis
0.5
V
RS-232 RECEIVER
Input Voltage Range
30
+30
V
Input Threshold Low
0.6
1.2
V
Input Threshold High
1.6
2.4
V
Input Hysteresis
0.4
V
Input Resistance
3
5
7
kΩ
RS-232 TRANSMITTER
Output Voltage Swing (RS-232)
±5.0
±5.2
V
VCC = 3.3 V, all transmitter outputs loaded with 3 kΩ to ground
Output Voltage Swing (RS-562)
±3.7
V
VCC = 3.0 V
Transmitter Output Resistance
300
Ω
VCC = 0 V, VOUT = ±2 V
Output Short-Circuit Current (RS-232)
±15
mA
TIMING CHARACTERISTICS
Maximum Data Rate
460
kbps
VCC = 3.3 V, RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF, one
Tx switching
Receiver Propagation Delay
tPHL
0.4
1
μs
tPLH
0.4
1
μs
Transmitter Propagation Delay
300
1.2
μs
RL = 3 kΩ, CL = 1000 pF
Receiver Output Enable Time
200
ns
Receiver Output Disable Time
200
ns
Transmitter Skew
30
ns
Receiver Skew
300
ns
Transition Region Slew Rate
5.5
10
30
V/μs
Measured from +3 V to 3 V or
3 V to +3 V, VCC = 3.3 V;
RL = 3 kΩ, CL = 1000 pF, TA = 25°C
ESD PROTECTION (RS-232 I/O PINS)
±15
kV
Human body model
±15
kV
IEC 1000-4-2 air discharge
±8
kV
IEC 1000-4-2 contact discharge