ADM242AR-REEL データシートの表示（PDF） - Analog Devices

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ADM242AR-REEL

High-Speed, 5 V, 0.1 μF CMOS RS-232 Drivers/Receivers

Analog Devices 

ADM222/ADM232A/ADM242–SPECIFICATIONS (VCC = 5 V ؎ 10%. C1–C4 = 0.1 ␮F; all spec-

ifications TMIN to TMAX unless otherwise noted.)

Parameter

Min Typ Max Unit Test Conditions/Comments

RS-232 TRANSMITTERS

Output Voltage Swing

±5

Input Logic Threshold Low, VINL

Input Logic Threshold High, VINH

2.4

Logic Pull-Up Current

Data Rate

200

Output Resistance

300

Output Short Circuit Current (Instantaneous)

±9

1.7 0.8

1.7

12 40

± 10

V

All Transmitter Outputs Loaded with

3 kΩ to Ground

V

TIN

V

TIN

µA

TIN = 0 V

kB/s

Ω

VCC = V+ = V– = 0 V, VOUT = ± 2 V

mA

RS-232 RECEIVERS

RS-232 Input Voltage Range

–30

+30 V

RS-232 Input Threshold Low

0.8

1.2

V

RS-232 Input Threshold High

1.6 2.4 V

RS-232 Input Hysteresis

0.2

RS-232 Input Resistance

3

TTL/CMOS Output Voltage Low, VOL

TTL/CMOS Output Voltage High, VOH

3.5

TTL/CMOS Output Short-Circuit Current –2

TTL/CMOS Output Short-Circuit Current 10

TTL/CMOS Output Leakage Current

EN Input Threshold Low, VINL

EN Input Threshold High, VINH

2.0

0.4 1.0 V

VCC = 5 V

5

7

kΩ

TA = 0°C to 85°C

0.05 0.4 V

IOUT = 3.2 mA

V

IOUT = –1.0 mA

–85

mA Source Current (VOUT = GND)*

35

mA

Sink Current (VOUT = VCC)*

± 0.05 ± 10 µA

SHDN = GND/EN = VCC

0 V ≤ VOUT ≤ VCC

1.4 0.8 V

1.4

V

POWER SUPPLY

Power Supply Current

Shutdown Power Supply Current

SHDN Input Leakage Current

SHDN Input Threshold Low, VINL

SHDN Input Threshold High, VINH

4

8

mA No Load

13

mA 3 kΩ Load on Both Outputs

0.1 10

µA

±1

µA

1.4 0.8 V

2.0

1.4

V

AC CHARACTERISTICS

Transition Region Slew Rate

3

Transmitter Propagation Delay TTL to RS-232

Receiver Propagation Delay RS-232 to TTL

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

8

30

0.85 3.5

1.0 3.5

0.1 0.5

0.3 0.5

125 500

160 500

250

3.5

150

200

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

µs

tPHLT

µs

tPLHT

µs

tPHLR

µs

tPLHR

ns

tER

ns

tDR

µs

SHDN Goes High

µs

SHDN Goes Low

ns

ns

*Guaranteed by design, not production tested.

Specifications subject to change without notice.

–2–

REV. B

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