Datasheet

ADM3202/ADM3222/ADM1385
Rev. E | Page 3 of 16
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
8 12 mA R
L
= 3 kΩ to GND
Shutdown Supply Current 0.01 0.5 μA
LOGIC
Input Logic Threshold Low, V
INL
0.8 V T
IN
Input Logic Threshold High, V
INH
2.0 V T
IN
CMOS Output Voltage Low, V
OL
0.4 V I
OUT
= 1.6 mA
CMOS 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
1
Output Leakage Current ±10 μA Receivers disabled
RS-232 RECEIVER
EIA-232 Input Voltage Range −30 +30 V
EIA-232 Input Threshold Low 0.6 1.2 V
EIA-232 Input Threshold High 1.6 2.4 V
EIA-232 Input Hysteresis 0.4 V
EIA-232 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
RS-232 Output Short-Circuit Current ±15 mA
Output Leakage Current ±25 μA
SD
= low, V
OUT
= 12 V
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
TPHL 0.4 1 μs
TPLH 0.4 1 μs
Transmitter Propagation Delay 0.3 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
1
ADM1385: Input leakage current typically −10 μA when T
IN
= GND.