Datasheet

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

MAX3238E

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

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

The auto-powerdown 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 µ A. By disconnecting the serial port or placing the peripheral drivers off, auto-powerdown plus occurs if there

is no activity in the logic levels for the driver inputs. Auto-powerdown plus can be disabled when FORCEON and

FORCEOFF are high. With auto-powerdown 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 µ s. INVALID is low (invalid

data) if all receiver input voltages are between –0.3 V and 0.3 V for more than 30 µ s. Refer to Figure 5 for

receiver input levels.

ORDERING INFORMATION

PACKAGE

(1)

ORDERABLE PART NUMBER TOP-SIDE MARKING

Tube of 50 MAX3238ECDB

SSOP – DB MAX3238EC

Reel of 2000 MAX3238ECDBR

Tube of 50 MAX3238ECPW

0 ° C to 70 ° C TSSOP – PW MP238EC

Reel of 2000 MAX3238ECPWR

SOIC – DW Reel of 2000 MAX3238ECDWR MAX3238EC

QFN – RHB Reel of 2000 MAX3238ECRHBR Preview

Tube of 50 MAX3238EIDB

SSOP – DB MAX3238EI

Reel of 2000 MAX3238EIDBR

Tube of 50 MAX3238EIPW

–40 ° C to 85 ° C TSSOP – PW MP238EI

Reel of 2000 MAX3238EIPWR

SOIC – DW Reel of 2000 MAX3238ICDWR MAX3238EI

QFN – RHB Reel of 2000 MAX3238EIRHBR Preview

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

www.ti.com/sc/package.

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