Datasheet

ADM3232E
Rev. B | Page 3 of 12
SPECIFICATIONS
V
CC
= 3.3 V ± 0.3 V, C1 to C4 = 0.1 µF; all specifications T
MIN
to T
MAX
, 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
V
CC
Power Supply Current 1.3 3 mA No load
LOGIC
Input Logic Threshold Low, V
INL
0.8 V T
IN
Input Logic Threshold High, V
INH
2.0 V T
IN
TTL/CMOS Output Voltage Low, V
OL
0.4 V I
OUT
= 1.6 mA
TTLCMOS Output Voltage High, V
OH
V
CC
− 0.6 V
I
OUT
= −1 mA
Logic Pull-Up Current 5 10 μA T
IN
= GND to V
CC
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 V
CC
= 3.3 V, all transmitter outputs loaded with 3 kΩ to ground
Output Voltage Swing (RS-562) ±3.7 V V
CC
= 3.0 V
Transmitter Output Resistance 300 Ω V
CC
= 0 V, V
OUT
= ±2 V
Output Short-Circuit Current (RS-232) ±15 mA
TIMING CHARACTERISTICS
Maximum Data Rate 460 kbps
V
CC
= 3.3 V, R
L
= 3 kΩ to 7 kΩ, C
L
= 50 pF to 1000 pF, one
Tx switching
Receiver Propagation Delay
t
PHL
0.4 1 μs
t
PLH
0.4 1 μs
Transmitter Propagation Delay 300 1.2 μs R
L
= 3 kΩ, C
L
= 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, V
CC
= 3.3 V;
R
L
= 3 kΩ, C
L
= 1000 pF, T
A
= 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