Plus RS-232 Manuel d'utilisateur télécharger pdf (Page 3)

DIN2

DIN1

DOUT2

DOUT1

Auto-Powerdown Plus

INVALID

RIN1

RIN2

FORCEOFF

FORCEON

ROUT1

ROUT2

5 k

Ω

READY

TRS3318

www.ti.com

SLLS820A –AUGUST 2007–REVISED OCTOBER 2013

LOGIC DIAGRAM (POSITIVE LOGIC)

TERMINAL FUNCTIONS

TERMINAL

DESCRIPTION

NAME NO.

C1+ 2 Positive voltage-doubler charge-pump capacitor

C1– 4 Negative voltage-doubler charge-pump capacitor

C2+ 5 Positive inverting charge-pump capacitor

C2– 6 Negative inverting charge-pump capacitor

DIN 12, 13 CMOS driver inputs

DOUT 8, 17 RS-232 driver outputs

Force-off input, active low. Drive low to power down transmitters and charge pump. This overrides auto-

FORCEOFF 20

powerdown and FORCEON (see Function Table).

Force-on input, active high. Drive high to override auto-powerdown, keeping transmitters on (FORCEOFF must

FORCEON 14

be high) (see Function Table).

GND 18 Ground

Valid signal detector output, active low. A logic high indicates that a valid RS-232 level is present on a receiver

INVALID 11

input.

Ready to transmit output, active high. READY is enabled high when V– goes below –3.5 V and the device is

READY 1

ready to transmit.

RIN 9, 16 RS-232 receiver inputs

ROUT 10, 15 CMOS receiver outputs

V+ 3 2 × V

generated by the charge pump

V– 7 –2 × V

generated by the charge pump

19 2.25-V to 3-V single-supply voltage

Product Folder Links: TRS3318

1 2 3 4 5 6 7 8 ... 15 16

Commentaires sur ces manuels

Pas de commentaire

Plus RS-232 Manuel d'utilisateur Page 3

Commentaires sur ces manuels

Produits connexes et manuels pour Projecteurs Plus RS-232