Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - transceivers RS232 1/1 TSSOP 16

 

       



SLLS351E − APRIL 2002 − REVISED OCTOBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Operate With 3-V to 5.5-V V

Supply

D Operate Up To 1 Mbit/s

D Low Standby Current...1 µA Typ

D External Capacitors ...4 × 0.1 µF

D Accepts 5-V Logic Input With 3.3-V Supply

D RS-232 Bus-Pin ESD Protection Exceeds

±15 kV Using Human-Body Model (HBM)

D Auto-Powerdown Feature Automatically

Disables Drivers for Power Savings

D Applications

− Battery-Powered, Hand-Held, and

Portable Equipment

− PDAs and Palmtop PCs

− Notebooks, Sub-Notebooks, and Laptops

− Digital Cameras

− Mobile Phones and Wireless Devices

description/ordering information

The SN65C3221 and SN75C3221 consist of one line driver, one line receiver, and a dual charge-pump circuit

with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). These devices provide the

electrical interface between an asynchronous communication controller and the serial-port connector. The

charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices

operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/µs to 150 V/µs.

Flexible control options for power management are available when the serial port is inactive. The

auto-powerdown feature functions when FORCEON is low and FORCEOFF

is high. During this mode of

operation, if the devices do not sense a valid RS-232 signal on the receiver input, the driver output is disabled.

If FORCEOFF

is set low and EN is high, both the driver and receiver are shut off, and the supply current is

reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown

condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF

are high. With

auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver

input. The INVALID

output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high

(valid data) if the 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 the receiver input voltage is between −0.3 V and

0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

SSOP (DB) Reel of 2000 SN75C3221DBR CA3221

−0°C to 70°C

TSSOP (PW)

Tube of 90 SN75C3221PW

CA3221

−0 C to 70 C

TSSOP (PW)

Reel of 2000 SN75C3221PWR

CA3221

SSOP (DB) Reel of 2000 SN65C3221DBR CB3221

−40°C to 85°C

TSSOP (PW)

Tube of 90 SN65C3221PW

CB3221

−40 C to 85 C

TSSOP (PW)

Reel of 2000 SN65C3221PWR

CB3221

†

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.

DB OR PW PACKAGE

(TOP VIEW)

C1+

V+

C1−

C2+

C2−

V−

RIN

FORCEOFF

GND

DOUT

FORCEON

DIN

INVALID

ROUT

  !"#$%&" ' ()##*& %' "! +),-(%&" .%&*

#".)(&' ("!"#$ &" '+*(!(%&"' +*# &/* &*#$' "! *0%' '&#)$*&'

'&%.%#. 1%##%&2 #".)(&" +#"(*''3 ."*' "& *(*''%#-2 (-).*

&*'&3 "! %-- +%#%$*&*#'

Summary of content (20 pages)

PAGE 1
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 D D D D D D D D DB OR PW PACKAGE (TOP VIEW) Operate With 3-V to 5.5-V VCC Supply Operate Up To 1 Mbit/s Low Standby Current . . . 1 µA Typ External Capacitors . . . 4 × 0.1 µF Accepts 5-V Logic Input With 3.
PAGE 2
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 Function Tables EACH DRIVER INPUTS DIN FORCEON FORCEOFF VALID RIN RS-232 LEVEL 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 disabled L L H Yes H H L H Yes L L L H No Z H L H No Z Normal operation with auto-powerdown enabled Powered off by auto-powerdown feature H = high level,
PAGE 3
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6 V Positive output supply voltage range, V+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.
PAGE 4
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 DRIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Note 4 and Figure 6) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VOH High-level output voltage DOUT at RL = 3 kΩ to GND, DIN = GND 5 5.4 V VOL Low-level output voltage DOUT at RL = 3 kΩ to GND, DIN = VCC −5 −5.
PAGE 5
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 RECEIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Note 4 and Figure 6) PARAMETER VOH VOL TEST CONDITIONS High-level output voltage IOH = −1 mA IOL = 1.6 mA Low-level output voltage VIT+ Positive-going input threshold voltage VCC = 3.
PAGE 6
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 AUTO-POWERDOWN SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 5) PARAMETER TEST CONDITIONS MIN VT+(valid) Receiver input threshold for INVALID high-level output voltage FORCEON = GND, FORCEOFF = VCC VT−(valid) Receiver input threshold for INVALID high-level output vol
PAGE 7
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 PARAMETER MEASUREMENT INFORMATION 3V Generator (see Note B) Input RS-232 Output 50 Ω RL tTHL CL (see Note A) 3V FORCEOFF TEST CIRCUIT 0V tTLH −3 V −3 V 6V SR(tr) + t THL or t TLH VOH 3V 3V Output VOL VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig capacitance. B.
PAGE 8
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 PARAMETER MEASUREMENT INFORMATION 3V Input 3 V or 0 V FORCEON VCC S1 1.5 V GND −3 V tPZH (S1 at GND) tPHZ (S1 at GND) RL 3 V or 0 V 1.5 V VOH Output 50% Output CL (see Note A) EN Generator (see Note B) 50 Ω 0.3 V tPZL (S1 at VCC) tPLZ (S1 at VCC) 0.3 V Output 50% VOL TEST CIRCUIT NOTES: A. B. C. D. VOLTAGE WAVEFORMS CL includes probe and jig capacitance.
PAGE 9
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 PARAMETER MEASUREMENT INFORMATION 2.7 V 2.7 V 0V Receiver Input 0V ROUT Generator (see Note B) 3V −2.7 V −2.7 V 50 Ω tinvalid −3 V tvalid VCC Autopowerdown INVALID CL = 30 pF (see Note A) FORCEOFF FORCEON DIN DOUT 50% VCC INVALID Output 50% VCC 0V ten ≈V+ V+ 0.3 V VCC 0V 0.
PAGE 10
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004 APPLICATION INFORMATION EN 1 16 2 VCC C1+ 15 + 3 C1 + + − − V+ Autopowerdown C3† 4 GND − 14 6 C2− 7 − RIN 12 C2 11 V− 10 C4 + DOUT C2+ + − CBYPASS = 0.1 µF C1− 13 5 FORCEOFF 8 9 FORCEON DIN INVALID ROUT 5 kΩ † C3 can be connected to VCC or GND. NOTE A: Resistor values shown are nominal. VCC vs CAPACITOR VALUES VCC C1 C2, C3, and C4 3.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.com 31-Oct-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 12.0 16.0 Q1 SN65C3221DBR SSOP DB 16 2000 330.0 16.4 8.2 6.6 2.5 SN65C3221PWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 SN75C3221DBR SSOP DB 16 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.
PAGE 15
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN65C3221DBR SSOP DB 16 2000 367.0 367.0 38.0 SN65C3221PWR TSSOP PW 16 2000 367.0 367.0 35.0 SN75C3221DBR SSOP DB 16 2000 367.0 367.0 38.0 SN75C3221PWR TSSOP PW 16 2000 367.0 367.0 35.
PAGE 16
PAGE 17
PAGE 18
PAGE 19
MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
PAGE 20
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.