MAX3238E| Datasheet

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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

FEATURES
RS-232 Bus-Pin ESD Protection Exceeds 15 kV Using Human-Body Model (HBM) Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards Operates With 3-V to 5.5-V VCC Supply Operates up to 400 kbit/s Five Drivers and Three Receivers Auto-Powerdown Plus Feature Enables Flexible Power-Down Mode Low Standby Current . . . 1 uA Typical External Capacitors . . . 4 0.1 uF Accepts 5-V Logic Input With 3.3-V Supply Always-Active Noninverting Receiver Output (ROUT1B) Alternative High-Speed Pin-Compatible Device (1 Mbit/s) for SNx5C3238 ESD Protection for RS-232 Interface Pins 15 kV Human-Body Model (HBM) 8 kV IEC61000-4-2, Contact Discharge 15 kV IEC61000-4-2, Air-Gap Discharge

DB, DW, OR PW PACKAGE (TOP VIEW)

C2 + GND C2- V- DOUT1 DOUT2 DOUT3 RIN1 RIN2 DOUT4 RIN3 DOUT5 FORCEON FORCEOFF

1 2 3 4 5 6 7 8 9 10 11 12 13 14

28 27 26 25 24 23 22 21 20 19 18 17 16 15

C1+ V+ VCC C1- DIN1 DIN2 DIN3 ROUT1 ROUT2 DIN4 ROUT3 DIN5 ROUT1B INVALID

RHB PACKAGE (TOP VIEW)

APPLICATIONS
Battery-Powered Systems PDAs Notebooks Subnotebooks Laptops Palmtop PCs Hand-Held Equipment Modems Printers
DOUT1 DOUT2 DOUT3 RIN1 RIN2 DOUT4 RIN3 NC
1 2 3 4 5 6 7 8

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 9 10 11 12 13 14 15 16

V- C2 GND C2+ C1+ V+ VCC NC

C1 DIN1 DIN2 DIN3 ROUT1 ROUT2 DIN4 ROUT3

DESCRIPTION/ORDERING INFORMATION
The MAX3238E consists of five line drivers, three line receivers, and a dual charge-pump circuit with 15-kV ESD (HBM) protection on the driver output (DOUT) and receiver input (RIN) terminals. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between notebook and subnotebook computer applications. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT1B), which allows applications using the ring indicator to transmit data while the device is powered down. This device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/us driver output slew rate.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

DOUT5 FORCEON FORCEOFF INVALID NC ROUT1B DIN5 NC
Copyright 2006, Texas Instruments Incorporated