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Product Descriptions

The  ST2221C  is  specifically  designed  for  LED  and  LED  DISPLAY  constant  current  drivers.     The value of constant current can be varied using an external resistor (Iout = 5 ~90mA).    The devices include a 16-bit shift registers, latches, and constant current drivers on a single Silicon CMOS chip.

Product Features

Constant Current Output : Current with one resistor for 5mA to 90mA

Maximum Clock Frequency : 25MHz (Cascade Operation)

5V CMOS Compatible Input

Package :  DIP24 , SOP24, SSOP24

Constant Current Matching:    (Ta = 25°C、VDD = 5.0V)

Bit-to-Bit:        ± 6.0 PERCENT、Chip-to-Chip : ± 10.0 PERCENT、@IOUT = 5 ~ 90mA 

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