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ADM222 Datasheet(PDF) 2 Page - Analog Devices

Part No. ADM222
Description  High Speed, 5 V, 0.1 uF CMOS RS-232 Drivers/Receivers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM222 Datasheet(HTML) 2 Page - Analog Devices

   
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REV. 0
–2–
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
RS-232 TRANSMITTERS
Output Voltage Swing
±5
±9
V
All Transmitter Outputs Loaded with
3 k
Ω to Ground
Input Logic Threshold Low, V
INL
1.4
0.8
V
T
IN
Input Logic Threshold High, V
INH
2.0
1.4
V
T
IN
Logic Pullup Current
5
40
µAT
IN = 0 V
Data Rate
200
kB/s
Output Resistance
300
V
CC = V+ = V– = 0 V, VOUT = ± 2 V
Output Short Circuit Current (Instantaneous)
±7
±22
mA
RS-232 RECEIVERS
RS-232 Input Voltage Range
–30
+30
V
RS-232 Input Threshold Low
0.8
1.3
V
RS-232 Input Threshold High
1.8
2.4
V
RS-232 Input Hysteresis
0.2
0.5
1.0
V
V
CC = 5 V
RS-232 Input Resistance
357k
TTL/CMOS Output Voltage Low, V
OL
0.2
0.4
V
I
OUT = 3.2 mA
TTL/CMOS Output Voltage High, V
OH
3.5
V
I
OUT = –1.0 mA
TTL/CMOS Output Short-Circuit Current
–2
–10
mA
Source Current (V
OUT = GND)
TTL/CMOS Output Short-Circuit Current
10
30
mA
Sink Current (V
OUT = VCC)
TTL/CMOS Output Leakage Current
±0.05 ±10
µA
SHDN
= GND/EN = V
CC
0 V
≤ V
OUT ≤ VCC
EN
Input Threshold Low, V
INL
1.4
0.8
V
EN
Input Threshold High, V
INH
2.0
1.4
V
POWER SUPPLY
Power Supply Current
4
8
mA
No Load
15
mA
3 k
Ω Load on Both Outputs
Shutdown Power Supply Current
0.1
10
µA
SHDN
Input Leakage Current
±1
µA
SHDN
Input Threshold Low, V
INL
1.4
0.8
V
SHDN
Input Threshold High, V
INH
2.0
1.4
V
AC CHARACTERISTICS
Transition Region Slew Rate
6
12
30
V/
µsC
L = 50 pF to 2500 pF, R L = 3 kΩ to 7 k Ω
Measured from +3 V to –3 V or –3 V to +3 V
Transmitter Propagation Delay TTL to RS-232
0.7
3.5
µst
PHLT
0.7
3.5
µst
PLHT
Receiver Propagation Delay RS-232 to TTL
0.2
0.5
µst
PHLR
0.3
0.5
µst
PLHR
Receiver Output Enable Time
125
500
ns
t
ER
Receiver Output Disable Time
160
500
ns
t
DR
Transmitter Output Enable Time
250
µs
SHDN
Goes high
Transmitter Output Disable Time
3.5
µs
SHDN
Goes low
Transmitter + to – Propagation Delay Difference
300
ns
Receiver + to – Propagation Delay Difference
100
ns
Specifications subject to change without notice.
ADM222/ADM232A/ADM242–SPECIFICATIONS
(V
CC= +5 V ± 10%, C1–C4 = 0.1 µF; all spec-
ifications T
MIN to TMAX unless otherwise noted.)


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