UPD4722GS Просмотр технического описания (PDF) - NEC => Renesas Technology

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Компоненты Описание

производитель

UPD4722GS

RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V

NEC => Renesas Technology 

µPD4722

ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)

Parameter

Symbol

Ratings

Unit

Supply Voltage (VCHA = L)

VCC

–0.5 to +7.0

V

Supply Voltage (VCHA = H)

VCC

–0.5 to +4.5

V

Driver Input Voltage

DIN

–0.5 to VCC +0.5

V

Receiver Input Voltage

RIN

–30.0 to +30.0

V

Control Input Voltage (STBY, VCHA, EN)

VIN

–0.5 to VCC +0.5

V

Driver Output Voltage

DOUT

–25.0 to +25.0Note 6

V

Receiver Output Voltage

ROUT

–0.5 to VCC +0.5

V

Input Current (DIN, STBY, VCHA, EN)

IIN

±20.0

mA

Operating Ambient Temperature

TA

–40 to +85

°C

Storage Temperature

Tstg

–55 to + 150

°C

Total Power Dissipation

PT

0.5

W

Note 6. Pulse width = 1 ms, duty = 10 % MAX.

RECOMMENDED OPERATING CONDITIONS

Parameter

Supply Voltage (VCHA = L, 5 V mode)

Supply Voltage (VCHA = H, 3 V mode)

High-Level Input Voltage (DIN)

Low-Level Input Voltage (DIN)

High-Level Input Voltage (STBY, VCHA, EN)

Low-Level Input Voltage (STBY, VCHA, EN)

Receiver Input Voltage

Operating Ambient Temperature

Capacitance of External Capacitor

Symbol

VCC

VCC

VIH

VIL

VIH

VIL

RIN

TA

Note 7

MIN.

4.5

3.0

2.0

0

2.4

0

–30

–40

0.47

TYP.

5.0

3.3

MAX.

5.5

3.6

VCC

0.8

VCC

0.6

+30

+85

4.7

Unit

V

V

V

V

V

V

V

°C

µF

Note 7. In low temperature (below 0 ˚C), the capacitance of electrolytic capacitor becomes lower. Therefore,

set higher values when using in low temperature.

Concerning the wiring length between the capacitor and the IC, the shorter the better.

Capacitors with good frequency characteristics such as tantalum capacitors, laminated ceramic

capacitors, and aluminum electrolytic capacitors for switching power supply are recommended for the

external capacitors.

4

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