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Details, datasheet, quote on part number:SN65C3221PW
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Datasheet text preview:
SN65C3221, SN75C3221 3-V TO 5.5-V SINGLE-CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SLLS351B APRIL 2002
D D D D D D D D
D
Operate With 3-V to 5.5-V VCC Supply Operate up to 1 Mbit/s Low Standby Current . . . 1 µA Typical External Capacitors . . . 4 × 0.1 µF Accepts 5-V Logic Input With 3.3-V Supply RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM) Auto-Powerdown Feature Automatically Disables Drivers for Power Savings Applications Battery-Powered, Hand-Held, and Portable Equipment PDAs and Palmtop PCs Notebooks, Sub-Notebooks, and Laptops Digital Cameras Mobile Phones and Wireless Devices Package Options Include Plastic Shrink Small-Outline (DB) and Thin Shrink Small-Outline (PW) Packages
DB OR PW PACKAGE (TOP VIEW)
EN C1+ V+ C1 C2+ C2 V RIN
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
FORCEOFF VCC GND DOUT FORCEON DIN INVALID ROUT
description
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. The SN65C3221 is characterized for operation from 40°C to 85°C. The SN75C3221 is characterized for operation from 0°C to 70°C.
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 2002, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
SN65C3221, SN75C3221 3-V TO 5.5-V SINGLE-CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SLLS351B APRIL 2002
AVAILABLE OPTIONS PACKAGED DEVICES TA 40°C to 85°C 0°C to 70°C SHRINK SMALL OUTLINE (DB) SN65C3221DB SN75C3221DB THIN SHRINK SMALL OUTLINE (PW) SN65C3221PW SN75C3221PW
The DB and PW packages are available taped and reeled. Add the suffix R to device type (e.g., SN65C3221DBR).
Function Tables
EACH DRIVER INPUTS DIN X L H L H L H FORCEON X H H L L L L FORCEOFF L H H H H H H VALID RIN RS-232 LEVEL X X X Yes Yes No No OUTPUT DOUT Z H L H L Z Z DRIVER STATUS Powered off Normal operation with auto-powerdown disabled Normal operation with auto-powerdown enabled Powered off by y auto-powerdown feature
H = high level, L = low level, X = irrelevant, Z = high impedance EACH RECEIVER INPUTS RIN L H X Open EN L L H L VALID RIN RS-232 LEVEL X X X No OUTPUT ROUT H L Z H
H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = disconnected input or connected driver off
logic diagram (positive logic)
DIN 11 13 DOUT
FORCEOFF
16
FORCEON
12
Auto-powerdown
10
INVALID
ROUT
9
8 1
RIN EN
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN65C3221, SN75C3221 3-V TO 5.5-V SINGLE-CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SLLS351B APRIL 2002
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V Negative output supply voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V Supply voltage difference, V+ V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 V Input voltage range, VI: Driver (FORCEOFF, FORCEON, EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6 V Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V to 25 V Output voltage range, VO: Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2 V to 13.2 V Receiver (INVALID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.3 V Package thermal impedance, JA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltages are with respect to network GND. 2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3 and Figure 6)
MIN Supply voltage voltage VIH Driver and control high-level input voltage and control high level input voltage VIL VI VI TA Driver and control low-level input voltage Driver and control input voltage Receiver input voltage Operating free-air temperature free-air tem SN65C3221 SN75C3221 VCC = 3.3 V VCC = 5 V DIN, FORCEOFF FORCEON EN FORCEOFF, FORCEON, EN DIN, FORCEOFF, FORCEON, EN DIN, FORCEOFF, FORCEON 0 25 40 0 VCC = 3.3 V VCC = 5 V 3 4.5 2 2.4 0.8 5.5 25 85 70 NOM 3.3 5 MAX 3.6 5.5 UNIT V V V V V °C
NOTE 3: Test conditions are C1C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Note 3 and Figure 6)
PARAMETER II Input leakage current FORCEOFF, FORCEON, EN Auto-powerdown disabled ICC Supply current (TA = 25°C) 25°C) Powered off Auto-powerdown enabled No load, FORCEOFF and FORCEON at VCC No load, FORCEOFF at GND No load, FORCEOFF at VCC, FORCEON at GND, All RIN are open or grounded TEST CONDITIONS MIN TYP ±0.01 0.3 1 1 MAX ±1 1 10 10 µA UNIT µA mA
All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C. NOTE 3: Test conditions are C1C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
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