ST16C450


UART with Higher Operating Speed and Lower Access Time

Features

  • Pin to pin and functionally compatible to the Industry Standard 16450
  • 1.5 Mbps transmit/receive operation (24MHz)
  • Programmable word lengths (5, 6, 7, 8)
  • Even, odd, force, or no parity generation and detection
  • Independent transmit and receive control
  • Standard modem interface
  • Low operating current ( 1.2mA typ.)
  • Pb-Free, RoHS Compliant Versions Offered
Applications

  • Battery Operated Electronics
  • Internet Appliances
  • Handheld Terminal
  • Personal Digital Assistants
  • Cellular Phones DataPort
Description
The ST16C450 is a universal asynchronous receiver and transmitter. The ST16C450 is an improved version of the NS16450 UART with higher operating speed and lower access time. A programmable baud rate generator is provided to select transmit and receive clock rates from 50 bps to 1.5 Mbps.

The ST16C450 on board status registers provides the error conditions, type and status of the transfer operation being performed. Included is complete MODEM control capability, and a processor interrupt system that may be software tailored to the user’s requirements. The ST16C450 provides internal loop- back capability for on board diagnostic testing.

The ST16C450 is available in 40 pin PDIP, 44 pin PLCC, and 48 pin TQFP packages. It is fabricated in an advanced CMOS process to achieve low drain power and high speed requirements.

For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.

Part NumberPkg CodeRoHSMin
Temp.
(°C)
Max
Temp.
(°C)
StatusBuy NowOrder Samples
ST16C450CJ44-FPLCC44PLCC44070Active
ST16C450CJ44TR-FPLCC44 PLCC44 070Active
ST16C450CQ48-FTQFP48TQFP48070Active
ST16C450CQ48TR-FTQFP48TQFP48-4085Active
ST16C450IJ44-FPLCC44PLCC44-4085Active
ST16C450IJ44TR-FPLCC44PLCC44-4085Active
ST16C450IQ48-FTQFP48TQFP48-4085Active
ST16C450IQ48TR-FTQFP48TQFP48-4085Active
ST16C450CP40-FPDIP40PDIP40070EOL
ST16C450IP40-FPDIP40PDIP40-4085EOL
ST16C450CP40PDIP40070OBS
ST16C450IP40PDIP40-4085OBS

Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs. 
Specifications
CPUInterfaceIntel
CH1
Max Data Rate @ 5/3.3/2.5/1.8V (Mbps)1.5/0.5/na/na
Tx/RxFIFO(Bytes)1/1
Tx/RxFIFOCtrsNo
Tx/RxFIFOINT TrigNo/No
AutoRTS/CTSNo
IrDaSupNo
5VTolInputsNo
Sup V2.97-5.5
PkgsPDIP-40, PLCC-44, TQFP-48
Data Rate@5/3.3/2.5V1.5/0.5/na