Datasheet Details
| Part number | ST2221A |
|---|---|
| Manufacturer | SiTI |
| File Size | 192.09 KB |
| Description | 8-Bit CONSTANT CURRENT LED DRIVERS |
| Datasheet |
 ST2221A Datasheet
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General Description
The ST2221A 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 an 8-bit shift registers, latches, and constant current drivers on a single Silicon CMOS chip.
Key Features
- z Constant Current Output : Current with one resistor for 5mA to 90mA z Maximum Clock Frequency : 25MHz (Cascade Operation) z 5V CMOS Compatible Input z Package : PDIP16,SOP16,SSOP16 z Constant Current Matching: (Ta = 25°C、VDD = 5.0V) Bit-to-Bit : ± 6%、Chip-to-Chip : ± 10%、 @ IOUT = 5 ~ 40mA Bit-to-Bit : ± 6%、Chip-to-Chip : ± 10%、 @ IOUT = 40 ~ 90mA 8-BIT.