DS232AS datasheet(2/10 Pages) DALLAS

Teilenummer	DS232AS

Bauteilbeschribung	Dual RS-232 Transmitter/Receiver

PDF	10 Pages

Scroll/Zoom	100%

Hersteller	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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2 / 10 page

DS232A

2 of 10

FUNCTIONAL DIAGRAM OF DS232A Figure 1

NOTE: C5 is a recommended decoupling capacitor which is the same value as C1, C2, C3, and C4.

( ) Are for TSSOP package only.

PIN DESCRIPTIONS

VCC, GND: DC power is provided to the device on these pins. VCC is the +5-volt input.

V+: Positive supply output (RS-232). V+ requires an external storage charge capacitor of at least 0.1

µF.

A larger capacitor (up to 10

µF) can be used to reduce supply ripple.

V-: Negative supply output (RS-232). V- requires an external storage capacitor of at least 0.1

µF. A

larger capacitor (up to 10

µF) can be used to reduce supply ripple.

T1IN, T2 IN: Standard TTL/CMOS inputs for the RS-232 drivers. The inputs of unused drivers can be left

unconnected since each input has a 400 k

Ω pullup resistor.

T1OUT, T2 OUT: Driver outputs at RS-232 levels. Driver output swing meets RS-232 levels for loads up to

3 k

Ω. These driver outputs provide current necessary to meet RS-232 levels for loads up to 2500 pF.

DS232AS Datenblatt(PDF) 2 Page - Dallas Semiconductor