ADM231L–ADM234L/ADM236L–ADM241L
SPECIFICATIONS
VCC = 5 V 1ꢀ% (ADM231L, ADM232L, ADM234L, ADM236L, ADM238L, ADM239L, ADM241L); VCC = 5 V 5% (ADM233L and
ADM237L); V+ = 7.5 V to 13.2 V (ADM231L and ADM239L); C1 to C4 = 1.ꢀ µF ceramic. All specifications TMIN to TMAX, unless
otherwise noted.
Table 2.
Parameter
Min
Typ
Max Unit Test Conditions/Comments
Output Voltage Swing
VCC Power Supply Current
5
9
V
All transmitter outputs loaded with 3 kΩ to ground
No load, (ADM232L only)
No load
2.5
3.5
1.5
1
6.0
13
4
10
0.8
mA
mA
mA
µA
V
V+ Power Supply Current
No load, V+ = 12 V (ADM231L and ADM239L only)
Shutdown Supply Current
Input Logic Threshold Low, VINL
Input Logic Threshold High, VINH
Logic Pull-Up Current
RS-232 Input Voltage Range1
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
TIN, EN, SD, EN, SD
TIN, EN, SD, EN, SD
2.0
V
12
25
µA
V
V
V
V
kΩ
V
V
–30
0.8
+30
TIN = 0 V
1.2
1.6
0.65
5
2.4
RS-232 Input Resistance
3
7
0.4
TA = 0°C to 85°C
TTL/CMOS Output Voltage Low, VOL
TTL/CMOS Output Voltage High, VOH
TTL/CMOS Output Leakage Current
Output Enable Time (TEN)
3.5
IOUT = −1.0 mA
EN = VCC, 0 V ≤ ROUT ≤ VCC
+0.05
250
50
10 µA
ns
ns
µs
ADM236L, ADM239L, ADM241L (Figure 31, CL = 150 pF)
ADM236L, ADM239L, ADM241L (Figure 31, RL = 1 kΩ)
RS-232 to TTL
Output Disable Time (TDIS
)
Propagation Delay
Transition Region Slew Rate
Output Resistance
0.3
8
V/µs RL = 3 kΩ, CL = 2500 pF, measured from +3 V to −3 V or −3 V to +3 V
Ω
300
VCC = V+ = V– = 0 V, VOUT = 2 V
RS-232 Output Short-Circuit Current
10
mA
1 Guaranteed by design.
Rev. C | Page 3 of 20
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