SLLS850D January   2008  – March 2017 TRS3253E

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics—Power
    6. 6.6  Electrical Characteristics—Driver
    7. 6.7  Electrical Characteristics—Receiver
    8. 6.8  Electrical Characteristics—Status
    9. 6.9  Switching Characteristics—Driver
    10. 6.10 Switching Characteristics—Receiver
    11. 6.11 Switching Characteristics—Power and Status
    12. 6.12 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power
      2. 8.3.2 RS232 Driver
      3. 8.3.3 RS232 Receiver
      4. 8.3.4 RS232 Status
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

5 Pin Configuration and Functions

RSM Package
32-Pin VQFN
Top View
TRS3253E ponn_lls850.gif
Power pad can be connected to GND or floating.
NC – No internal connection.

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
C1+ 29 — Positive terminals of the voltage-doubler charge-pump capacitors
C2+ 1
C1– 31 — Negative terminals of the voltage-doubler charge-pump capacitors
C2– 2
DIN1 4 I Driver inputs
DIN2 5
DIN3 7
DOUT1 25 O RS-232 driver outputs
DOUT2 23
DOUT3 22
FORCEOFF 28 I Auto-powerdown-plus control input
FORCEON 9 I Auto-powerdown-plus control input
GND 26 — Ground
INVALID 6 O Invalid output pin. Active low when all RIN inputs are unpowered
NC 8 — No connect pins (do not connect to these pins)
16
24
32
RIN1 21 I RS-232 receiver inputs
RIN2 20
RIN3 19
RIN4 18
RIN5 17
ROUT1 14 O Receiver outputs. Swing between 0 and VL
ROUT2 13
ROUT3 12
ROUT4 11
ROUT5 10
VCC 27 — 3-V to 5.5-V supply voltage
VL 15 — Logic-level supply. All CMOS inputs and outputs are referenced to this supply
V+ 30 O 5.5-V supply generated by the charge pump
V– 3 O –5.5-V supply generated by the charge pump