Programmable DTE/DCE,

+5V RS-232 Transceiver

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3

PARAMETER

Transmitter + to - Propagation-Delay

Difference (Normal Operation)

MIN

TYP

MAX

100

UNITS

Input Leakage Current

ns

±1

Receiver Propagation Delay,

RS-232 to TTL (Normal Operation)

µA

Logic Input Threshold High

1.3

2.0

V

Logic Input Threshold Low

0.8

1.3

µs

V

Receiver Propagation Delay,

RS-232 to TTL (Shutdown Mode)

Data Rate

20

kbps

1.5

10

µs

Receiver Propagation-Delay Difference

(Normal Operation)

Transition-Region Slew Rate

612

30

100

V/

µs

Transmitter Propagation Delay,

TTL to RS-232 (Normal Operation)

ns

1.4

3.5

µs

Transmitter Enable Time

250

µs

Transmitter Disable Time

600

ns

Transmitter DTE/DCE Switch Time

600

ns

Receiver DTE/DCE Switch Time

920

mA

300

ns

Receiver Termination-Resistor

Connect/Disconnect Time

Shutdown Supply Current

300

ns

420

µA

Receiver Termination-Resistor Connect

Entering SHDN Time

250

µs

Receiver Termination-Resistor

Disconnect Exiting SHDN Time

300

ns

CONDITIONS

Receivers in shutdown mode

Ω to 7kΩ,

measured from 3V to -3V or -3V to 3V

(SHDN = 0V)

DTE/DCE = 0V, SHDN =

ELECTRICAL CHARACTERISTICS (continued)

Normal operation, transmitters and receivers

200

116

1.3

3.5

0.4

1.5

0.4

10

Note 1:

The 300

Ω minimum is the EIA/TIA-232E specification, but the actual resistance when in shutdown mode or when V

is typically 300k

Ω.

50

MODE-CHANGE TIMING (DTE/DCE)

AC CHARACTERISTICS

POWER SUPPLY

CONTROL LOGIC (DTE/DCE, SHDN, HI-Z)