460kbps, 1µA Supply Current,

RS-232-Compatible Transceivers in µMAX

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3

Note 1: Not tested—guaranteed by design.

TIMING CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Data Rate

RL = 3k

Ω, CL = 1000pF

460

kbps

Receiver Propagation Delay

Receiver input to receiver output

CL = 150pF

0.15

µs

Transmitter Skew

100

ns

Receiver Skew

50

ns

Transition Region Slew Rate

RL = 3k

Ω to 7kΩ, CL = 150pF to 1000pF,

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

11

V/µs

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RECEIVER INPUT

Input Threshold Low

0.8

V

Input Threshold High

2.4

V

Input Hysteresis

0.5

V

Input Resistance

5

k

Ω

TRANSMITTER OUTPUT

Output Voltage Swing

Transmitter output loaded with 3k

Ω to

ground

±3.7

V

Output Resistance (Note 1)

±2V

300

Ω

Output Short-Circuit Current

±60

mA

Output Leakage Current

±12V, transmitter disabled

±25

µA