SN65C3238EDB

SLLS726 – MAY 2006 FEATURES • • • • • • • • • • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM) Meet or Exceed the Requirements of TIA/EIA-232-F and ITU v.28 Standards Operate With 3-V to 5.5-V VCC Supply Operate up to 1000 kbit/s Five Drivers and Three Receivers Auto-Powerdown Plus Feature Enables Flexible Power-Down Mode Low Standby Current . . . 1 µA Typical External Capacitors . . . 4 × 0.1 µF Accept 5-V Logic Input With 3.3-V Supply Always-Active Noninverting Receiver Output (ROUT1B) 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 Battery-Powered Systems PDAs Notebooks Subnotebooks Laptops Palmtop PCs Hand-Held Equipment Modems Printers 28 2 27 3 26 4 25 5 24 6 23 7 22 8 21 9 20 10 19 11 18 12 17 13 16 14 15 C1+ V+ VCC C1− DIN1 DIN2 DIN3 ROUT1 ROUT2 DIN4 ROUT3 DIN5 ROUT1B INVALID RHB PACKAGE (TOP VIEW) APPLICATIONS • • • • • • • • • 1 V− C2– GND C2+ C1+ V+ VCC NC • 32 31 30 29 28 27 26 25 DOUT1 DOUT2 DOUT3 RIN1 RIN2 DOUT4 RIN3 NC 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 C1– DIN1 DIN2 DIN3 ROUT1 ROUT2 DIN4 ROUT3 DOUT5 FORCEON FORCEOFF INVALID NC ROUT1B DIN5 NC 9 10 11 12 13 14 15 16 DESCRIPTION/ORDERING INFORMATION The SN65C3238E and SN75C3238E consist 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 devices meet the requirements of TIA/EIA-232-F and provide 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 devices include an always-active noninverting output (ROUT1B), which allows applications using the ring indicator to transmit data while the device is powered down. These devices operate at data signaling rates up to 1000 kbit/s. 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. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. Copyright © 2006, Texas Instruments Incorporated PRODUCT PREVIEW www.ti.com SN65C3238E,, SN75C3238E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS WITH ±15-kV ESD (HBM) PROTECTION SN65C3238E,, SN75C3238E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS WITH ±15-kV ESD (HBM) PROTECTION www.ti.com SLLS726 – MAY 2006 DESCRIPTION/ORDERING INFORMATION (CONTINUED) 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 devices do 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 devices activate 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 PACKAGE (1) TA SSOP – DB 0°C to 70°C TSSOP – PW PRODUCT PREVIEW SOIC – DW QFN – RHB SSOP – DB –40°C to 85°C TSSOP – PW SOIC – DW QFN – RHB (1) 2 ORDERABLE PART NUMBER Tube of 50 SN75C3238EDB Reel of 2000 SN75C3238EDBR Tube of 50 SN75C3238EPW Reel of 2000 SN75C3238EPWR Tube of 50 SN75C3238EDW Reel of 2000 SN75C3238EDWR Reel of 2000 SN75C3238ECRHBR Tube of 50 SN65C3238EDB Reel of 2000 SN65C3238EDBR Tube of 50 SN65C3238EPW Reel of 2000 SN65C3238EPWR Tube of 50 SN65C3238EDW Reel of 2000 SN65C3238EDWR Reel of 2000 SN65C3238EIRHBR TOP-SIDE MARKING 75C3238E Preview 75C3238E Preview 65C3238E Preview 65C3238E Preview Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Submit Documentation Feedback SN65C3238E,, SN75C3238E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS WITH ±15-kV ESD (HBM) PROTECTION www.ti.com SLLS726 – MAY 2006 FUNCTION TABLES abc Each Driver (1) INPUTS DIN (1) FORCEON FORCEOFF TIME ELAPSED SINCE LAST RIN OR DIN TRANSITION OUTPUT DOUT DRIVER STATUS X X L X Z Powered off L H H X H H H H X L Normal operation with auto-powerdown plus disabled L L H 30 s Z Normal operation with auto-powerdown plus enabled Powered off by auto-powerdown plus feature H = high level, L = low level, X = irrelevant, Z = high impedance Each Receiver (1) OUTPUTS RIN1 RIN2–RIN3 FORCEOFF TIME ELAPSED SINCE LAST RIN OR DIN TRANSITION ROUT1B ROUT2 AND ROUT3 RECEIVER STATUS Powered off while ROUT1B is active L X L X L Z H X L X H Z L L H