SN65C3238DWG4



       
      SLLS352F − JUNE 1999 − REVISED OCTOBER 2004 D Auto-powerdown Plus D Operate With 3-V to 5.5-V VCC Supply D Always-Active Noninverting Receiver D D D D D D D DB, DW, OR PW PACKAGE (TOP VIEW) C2 + GND C2− V− DOUT1 DOUT2 DOUT3 RIN1 RIN2 DOUT4 RIN3 DOUT5 FORCEON FORCEOFF Output (ROUT1B) Support Operation From 250 kbit/s to 1 Mbit/s Low Standby Current . . . 1 µA Typ External Capacitors . . . 4 × 0.1 µF Accept 5-V Logic Input With 3.3-V Supply Inter-Operable With SN65C3243, SN75C3243 RS-232 Bus-Pin ESD Protection Exceeds ±15-kV Using Human-Body Model (HBM) Applications − Battery-Powered Systems, PDAs, Notebooks, Sub-Notebooks, Laptops, Palmtop PCs, Hand-Held Equipment, Modems, and Printers 1 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 description/ordering information The ’C3238 devices consist of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, these 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 1 Mbit/s and at an increased slew-rate range of 24 V/µs to 150 V/µs. ORDERING INFORMATION SOIC (DW) −0°C 70°C −0 C to 70 C SSOP (DB) TSSOP (PW) SOIC (DW) −40°C 85°C −40 C to 85 C ORDERABLE PART NUMBER PACKAGE† TA SSOP (DB) TSSOP (PW) Tube of 20 SN75C3238DW Reel of 1000 SN75C3238DWR Reel of 2000 SN75C3238DBR Tube of 50 SN75C3238PW Reel of 2000 SN75C3238PWR Tube of 20 SN65C3238DW Reel of 1000 SN65C3238DWR Reel of 2000 SN65C3238DBR Tube of 50 SN65C3238PW Reel of 2000 SN65C3238PWR TOP-SIDE MARKING 75C3238 75C3238 CA3238 65C3238 65C3238 CB3238 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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. Copyright  2004, Texas Instruments Incorporated     !"#$%! & '("")% $& ! *(+,'$%! -$%) "!-('%& '!!"# %! &*)''$%!& *)" %.) %)"#& ! )/$& &%"(#)%& &%$-$"- 0$""$%1 "!-('%! *"!')&&2 -!)& !% )')&&$",1 ',(-) %)&%2 ! $,, *$"$#)%)"& POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 

       
       SLLS352F − JUNE 1999 − REVISED OCTOBER 2004 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 device does not sense valid signal transitions on all receiver and driver inputs for 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 will occur 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 automatically activates once 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. Function Tables EACH DRIVER INPUTS OUTPUT DRIVER STATUS DIN FORCEON FORCEOFF TIME ELAPSED SINCE LAST RIN OR DIN TRANSITION X X L X Z Powered off Normal operation with auto-powerdown plus disabled DOUT L H H X H H H H X L 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 INPUTS OUTPUTS RIN2 RIN1, RIN3−RIN5 FORCEOFF TIME ELAPSED SINCE LAST RIN OR DIN TRANSITION L X L H X L L L L H H L ROUT1B ROUT X L Z X H Z H