STP08CP05TTR from STMicroelectronics, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	GND	power_in	Ground terminal. Return path for supply and output sink currents (IGND rated up to 800 mA absolute max).
2	SDI	input	Serial data input to the 8-bit shift register. Sampled on the rising edge of CLK.
3	CLK	input	Clock input for the shift register. Rising-edge triggered; maximum 30 MHz operating (50 MHz absolute max).
4	LE	input	Latch enable input. When high, data in the shift register is transferred to the output D-type storage register.
5	OUT0	output	Constant-current sink output 0. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance; drives one or more series LEDs to VDD_LED.
6	OUT1	output	Constant-current sink output 1. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
7	OUT2	output	Constant-current sink output 2. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
8	OUT3	output	Constant-current sink output 3. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
9	OUT4	output	Constant-current sink output 4. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
10	OUT5	output	Constant-current sink output 5. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
11	OUT6	output	Constant-current sink output 6. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
12	OUT7	output	Constant-current sink output 7. Sinks 5-100 mA (set by R-EXT) with up to 20 V compliance.
13	OE	input	Output enable, active low. When low, current sinks are enabled; when high, outputs are forced off. Supports PWM dimming (0-100% duty) for LED brightness control.
14	SDO	output	Serial data out. Last stage of the 8-bit shift register, used for cascading multiple devices.
15	R-EXT	passive	Constant-current programming pin. An external resistor from R-EXT to GND sets the per-channel output sink current (5-100 mA range).
16	VDD	power_in	Logic supply voltage terminal. Nominally 5 V; device also operates down to 3 V. Absolute max 7 V.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	TSSOP-16
Category	LED-drv
Pins	16

Ordering variants

Same part, different packaging or reel option.

STP08CP05TTR
STP08CP05TTRXTTR
STP08CP05TTRMTR
STP08CP05TTRB1R

CAD (KiCad official)

Symbol: STP08CP05TTR
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: STMicroelectronics datasheet (30 pp, sha256 390a5bbd882f195e, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF