www.ti.com

DETAILED DESCRIPTION

MAX3318

2.5-V 460-kbps RS-232 TRANSCEIVER

WITH

±15-kV ESD PROTECTION

SLLS687 – OCTOBER 2005

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

Tube of 70

MAX3318CDB

SSOP – DB

MA3318C

Reel of 2000

MAX3318CDBR

–0

°C to 70°C

Tube of 70

MAX3318CPW

TSSOP – PW

MA3318C

Reel of 2000

MAX3318CPWR

Tube of 70

MAX3318IDB

SSOP – DB

MA3318I

Reel of 2000

MAX3318IDBR

–40

°C to 85°C

Tube of 70

MAX3318IPW

TSSOP – PW

MA3318I

Reel of 2000

MAX3318IPWR

(1)

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

Flexible control options for power management are featured when the serial port and driver inputs are inactive.

The auto-power-down plus feature functions when FORCEON is low and FORCEOFF is high. During this mode

of operation, if the device does not sense valid signal transitions on all receiver and driver inputs for

approximately 30 s, the built-in charge pump and drivers are powered down, reducing the supply current to 1

µA.

By disconnecting the serial port or placing the peripheral drivers off, auto-power-down plus can be disabled when

FORCEON and FORCEOFF are high. With auto-power-down plus enabled, the device activates automatically

when a valid signal is applied to any receiver or driver input. INVALID is high (valid data) if any receiver input

voltage is greater than 2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less than 30

µs

(typical number). INVALID is low (invalid data) if all receiver input voltage are between –0.3 V and 0.3 V for more

than 30

µs (typical number).

2