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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

TRS3238E

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

WITH

±15-kV ESD (HBM) PROTECTION

SLLS797 – JUNE 2007

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

μA. 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

μs. INVALID is low (invalid

data) if all receiver input voltages are between –0.3 V and 0.3 V for more than 30

μs. Refer to Figure 5 for

receiver input levels.

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

Tube of 50

TRS3238ECDB

SSOP – DB

TRS3238EC

Reel of 2000

TRS3238ECDBR

Tube of 50

TRS3238ECPW

0

°C to 70°C

TSSOP – PW

RS38EC

Reel of 2000

TRS3238ECPWR

SOIC – DW

Reel of 2000

TRS3238ECDWR

TRS3238EC

QFN – RHB

Reel of 2000

TRS3238ECRHBR

PREVIEW

Tube of 50

TRS3238EIDB

SSOP – DB

TRS3238EI

Reel of 2000

TRS3238EIDBR

Tube of 50

TRS3238EIPW

–40

°C to 85°C

TSSOP – PW

RS38EI

Reel of 2000

TRS3238EIPWR

SOIC – DW

Reel of 2000

TRS3238ICDWR

TRS3238EI

QFN – RHB

Reel of 2000

TRS3238EIRHBR

PREVIEW

(1)

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

www.ti.com/sc/package.

(2)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

2

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