ADM222/ADM232A/ADM242–SPECIFICATIONS (ifVica=tio5nsVTꢁMIN1t0o%TM. ACX1u–nCle4s=s o0t.h1eꢀrwFi;saellnospteedc.)-
CC
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
RS-232 TRANSMITTERS
Output Voltage Swing
5
9
V
All Transmitter Outputs Loaded with
3 kΩ to Ground
Input Logic Threshold Low, VINL
Input Logic Threshold High, VINH
Logic Pull-Up Current
Data Rate
Output Resistance
1.7
1.7
12
0.8
40
V
V
TIN
2.4
TIN
TIN = 0 V
µA
kB/s
Ω
200
300
VCC = V+ = V– = 0 V, VOUT = 2 V
Output Short Circuit Current (Instantaneous)
10
mA
RS-232 RECEIVERS
RS-232 Input Voltage Range
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
RS-232 Input Resistance
TTL/CMOS Output Voltage Low, VOL
TTL/CMOS Output Voltage High, VOH
TTL/CMOS Output Short-Circuit Current
TTL/CMOS Output Short-Circuit Current
TTL/CMOS Output Leakage Current
–30
0.8
+30
V
V
V
V
kΩ
V
V
mA
mA
µA
1.2
1.6
0.4
5
2.4
1.0
7
0.2
3
VCC = 5 V
TA = 0°C to 85°C
IOUT = 3.2 mA
IOUT = –1.0 mA
0.05
0.4
3.5
–2
10
–85
35
0.05
Source Current (VOUT = GND)*
Sink Current (VOUT = VCC)*
SHDN = GND/EN = VCC
0 V ≤ VOUT ≤ VCC
10
EN Input Threshold Low, VINL
EN Input Threshold High, VINH
1.4
1.4
0.8
V
V
2.0
POWER SUPPLY
Power Supply Current
4
13
0.1
8
mA
mA
µA
µA
V
No Load
3 kΩ Load on Both Outputs
Shutdown Power Supply Current
SHDN Input Leakage Current
SHDN Input Threshold Low, VINL
SHDN Input Threshold High, VINH
10
1
0.8
1.4
1.4
2.0
3
V
AC CHARACTERISTICS
Transition Region Slew Rate
8
30
V/µs
CL = 50 pF to 1000 pF, RL = 3 kΩ to 7 kΩ
Measured from +3 V to –3 V or –3 V to +3 V
Transmitter Propagation Delay TTL to RS-232
Receiver Propagation Delay RS-232 to TTL
0.85
1.0
0.1
3.5
3.5
0.5
0.5
500
500
µs
µs
µs
µs
ns
ns
µs
µs
ns
ns
tPHLT
tPLHT
tPHLR
tPLHR
tER
tDR
0.3
Receiver Output Enable Time
Receiver Output Disable Time
Transmitter Output Enable Time
Transmitter Output Disable Time
Transmitter + to – Propagation Delay Difference
Receiver + to – Propagation Delay Difference
125
160
250
3.5
150
200
SHDN Goes High
SHDN Goes Low
*Guaranteed by design, not production tested.
Specifications subject to change without notice.
–2–
REV.
B
ADI [ ADI ]
