ST232AB Просмотр технического описания (PDF) - STMicroelectronics

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ST232AB

Very high speed, ultra low power consumption 5 V powered RS-232 drivers and receivers

STMicroelectronics 

Electrical characteristics

ST232AB - ST232AC

Table 6.

Receiver electrical characteristics

(C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical

values are referred to TA = 25 °C).

Symbol

Parameter

Test condition

Min. Typ. Max. Unit

VRIN

Receiver input voltage

operating range

RRIN

VRIL

VRIH

VRIHYS

VROL

VROH

ISCR

tDR

RS-232 input resistance

RS-232 input threshold low

TA = 25°C

RS-232 input threshold high

RS-232 input hysteresis

TTL/CMOS output voltage low

TTL/CMOS output voltage high

Receiver output short circuit

current

Propagation delay time

VCC = 5V

IOUT = 3.2mA (to VCC)

IOUT = -1mA (to GND)

to GND

to VCC

CL = 150pF (1)

1. RS-232 in to TTL-CMOS out (from 50% to 50%)

-30

30

V

3

5

7

kΩ

0.8

1.3

V

1.8

2.4

V

0.2

0.5

1

V

0.2

0.4

V

3.5 VCC-0.2

V

2

10

mA

10

30

0.1

0.5 µs

6/16

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