SLLS822C July   2007  – December 2024 TRSF3221E

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  ESD Ratings, IEC Specifications
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Thermal Resistance Characteristics
    6. 5.6  Electrical Characteristics
    7. 5.7  Electrical Characteristics, Driver
    8. 5.8  Switching Characteristics, Driver
    9. 5.9  Electrical Characteristics, Receiver
    10. 5.10 Switching Characteristics, Receiver
    11. 5.11 Electrical Characteristics, Auto-Powerdown
    12. 5.12 Switching Characteristics, Auto-Powerdown
    13. 5.13 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Typical Application
        1. 8.1.1.1 Design Requirements
        2. 8.1.1.2 Detailed Design Procedure
      2. 8.1.2 Application Performance Plot
    2. 8.2 Power Supply Recommendations
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Pin Configuration and Functions

TRSF3221E DB or PW Package. 16 Pins (Top View)DB or PW Package. 16 Pins (Top View)
TRSF3221E RGT, VSON Package, 16 Pins (Top View)RGT, VSON Package, 16 Pins (Top View)
Table 4-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME DB or PW RGT
EN 1 14 -- Low input enables receiver ROUT output. High input sets ROUT to high impedance.
C1+ 2 16 - Positive lead of C1 capacitor
V+ 3 15 O Positive charge pump output for storage capacitor only
C1- 4 1 - Negative lead of C1 capacitor
C2+ 5 2 - Positive lead of C2 capacitor
C2- 6 3 - Negative lead of C2 capacitor
V- 7 4 O Negative charge pump output for storage capacitor only
RIN 8 5 I RS232 line data input (from remote RS232 system)
ROUT 9 6 O Logic data output (to UART)
INVALID 10 7 Invalid output pin. Output low when RIN input is unpowered.
DIN 11 8 I Logic data input (from UART)
FORCEON 12 9 Automatic power-down control input
DOUT 13 10 O RS232 line data output (to remote RS232 system)
GRD 14 11 - Ground
VCC 15 12 - Supply Voltage, Connect to external 3V to 5.5V power supply
FORCEOFF 16 13 Automatic power-down control input
Thermal Pad - Yes - Exposed thermal pad. Can be connected to GND or left floating.
(1) Signal Types: I = Input, O = Output, I/O = Input or Output.
TRSF3221E DYY Package 16-Pin SOT-23-THN (Top View) Figure 4-1 DYY Package
16-Pin SOT-23-THN
(Top View)
Table 4-2 Pin Functions
PIN TYPE DESCRIPTION
NAME NO.
EN 1 I Low input enables receiver ROUT output. High input sets ROUT to high impedance.
C1+ 2 — Positive terminals of the voltage-doubler charge pump capacitors
V+ 3 O 5.5V supply generated by the charge pump
C1– 4 — Negative terminals of the voltage-doubler charge pump capacitors
C2+ 5 Positive terminals of the voltage-doubler charge pump capacitors
C2– 6 Negative terminals of the voltage-doubler charge pump capacitors
V– 7 O –5.5V supply generated by the charge pump
RIN 8 I RS-232 receiver input
ROUT 9 O Receiver output
INVALID 10 O Invalid output pin. Output low when RIN input is unpowered.
DIN 11 I Driver input
FORCEON 12 I Automatic power-down control input
DOUT 13 O RS-232 driver output
GND 14 — Ground
VCC 15 — 3V to 5.5V supply voltage
FORCEOFF 16 I Automatic power-down control input