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ADM238LJRZ1

5 V-Powered CMOS RS-232 Drivers/Receivers

Analog Devices 

ADM231L–ADM234L/ADM236L–ADM241L

SPECIFICATIONS

VCC = 5 V ± 10% (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 = 1.0 µF ceramic. All specifications TMIN to TMAX, unless

otherwise noted.

Table 2.

Parameter

Output Voltage Swing

VCC Power Supply Current

V+ Power Supply Current

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

RS-232 Input Resistance

TTL/CMOS Output Voltage Low, VOL

TTL/CMOS Output Voltage High, VOH

TTL/CMOS Output Leakage Current

Output Enable Time (TEN)

Output Disable Time (TDIS)

Propagation Delay

Transition Region Slew Rate

Output Resistance

RS-232 Output Short-Circuit Current

Min Typ Max Unit Test Conditions/Comments

±5 ±9

V

All transmitter outputs loaded with 3 kΩ to ground

2.5

6.0 mA No load, (ADM232L only)

3.5

13 mA No load

1.5

4

mA No load, V+ = 12 V (ADM231L and ADM239L only)

1

10 µA

0.8 V

TIN, EN, SD, EN, SD

2.0

V

TIN, EN, SD, EN, SD

12

25 µA

–30

0.8 1.2

+30 V

V

TIN = 0 V

1.6

2.4 V

0.65

V

3

5

7 kΩ

0.4 V

TA = 0°C to 85°C

3.5

V

IOUT = −1.0 mA

+0.05 ±10 µA EN = VCC, 0 V ≤ ROUT ≤ VCC

250

ns ADM236L, ADM239L, ADM241L (Figure 31, CL = 150 pF)

50

ns ADM236L, ADM239L, ADM241L (Figure 31, RL = 1 kΩ)

0.3

µs RS-232 to TTL

8

300

±10

V/µs RL = 3 kΩ, CL = 2500 pF, measured from +3 V to −3 V or −3 V to +3 V

Ω

VCC = V+ = V– = 0 V, VOUT = ±2 V

mA

1 Guaranteed by design.

Rev. C | Page 3 of 20

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