5

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CBM3232AS

OPERATION INSTRUCTION

RECEIVER ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1µF tested at VCC = 3.3V to 5.5V, TA = -40℃ to 85℃, unless otherwise specified.

Typical values are referred to TA = 25℃)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VRIN

Receiver Input

Voltage Operating

Range

-25

25

V

VRIL

RS-232 Input

Threshold Low

TA = 25℃

VCC = 3.3V

0.6

1.2

V

TA = 25℃

VCC = 5V

0.8

1.5

VRIH

RS-232 Input

Threshold High

TA = 25℃

VCC = 3.3V

1.5

2.4

V

TA = 25℃

VCC = 5V

1.8

2.4

VRIHYS

Input Hysteresis

0.3

V

RRIN

Input Resistance

TA = 25℃

3

5

7

kΩ

VROL

TTL/CMOS Output

Voltage Low

IOUT = 1.6mA

VCC = 3.3V

0.4

V

IOUT = 3.2mA

VCC = 5.5V

VROH

TTL/CMOS Output

Voltage High

IOUT = -0.5mA

VCC = 3.3V

VCC-0.

6

VCC-0.

1

V

IOUT = -1mA

VCC = 5.5V

TIMING CHARACTERISTICS

(C1 - C4 = 0.1µF, VCC = 3.3V to 5.5V, TA = -40℃ to 85°C, unless otherwise specified. Typical

values are referred to TA = 25℃)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Data Transfer Rate

one transmitter

switching

120

Kbps

Propagation Delay

Input to Output

4.0

9.7

µs

Propagation Delay

Input to Output

2.0

5.0

µs

Receiver

Propagation Delay

Difference

300

ns

Transmitter

Propagation Delay

Difference

300

ns

SRT

Transition Slew

Rate

measured from +3V to -3V or

1000pF

3

30

V/μs