DESCRIPTION

The UTC  L16B45B is designed for LED displays. UTC

L16B45B contains a serial buffer and data latches which convert

serial input data into parallel output format. at UTC  L16B45B

output stage, sixteen regulated  current ports are designed to

provide uniform and constant current sinks for driving LEDs within

a large range of VF variations.

UTC L16B45B provides users with great flexibility and device

performance while using UTC L16B45B in their system design for

LED display applications, e.g. LED panels. Users may adjust the

output current from 0.6mA to 45mA through an external resistor,

R-EXT, which gives users flexibility in controlling the light intensity

of LEDs. UTC  L16B45B guarantees to endure maximum 11V at

the output port. The high clock frequency, 35MHz, also satisfies the

system requirements of high volume data transmission.

FEATURES

* 16 constant-current output channels

* Constant output current invariant to load voltage change:

Constant output current range:  

0.6~45mA @ VDD=5V

0.6~35mA @ VDD=3.3V

* Output current adjusted through an external resistor

* Fast response of output current,  OE : 20ns @ VDD=3.3V

* Schmitt trigger input

* 3.3V, 5V supply voltage