SN74HC164PWR from Texas Instruments, in a TSSOP-14. 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	A	input	Gated Serial Input 1. AND-gated with input B to form the serial data into the first flip-flop; a low on A inhibits new data entry and resets the first flip-flop on the next CLK rising edge. VIH min 1.5 V at VCC=2 V, 3.15 V at VCC=4.5 V.
2	B	input	Gated Serial Input 2. AND-gated with input A to form the serial data into the first flip-flop; a low on B inhibits new data entry. Input current ±1 µA max.
3	QA	output	Parallel output bit A (first stage of the shift register). Drives ±4 mA at VCC=5 V into 10 LSTTL loads.
4	QB	output	Parallel output bit B (second stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
5	QC	output	Parallel output bit C (third stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
6	QD	output	Parallel output bit D (fourth stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
7	GND	power_in	Ground reference (0 V).
8	CLK	input	Clock input. Data is shifted one position on the low-to-high transition; fmax up to 36 MHz typical at VCC=6 V. Minimum high/low pulse width 14 ns at 6 V.
9	CLR	input	Asynchronous active-low clear. Driving CLR low forces all Q outputs (QA..QH) to logic 0 independent of CLK. Minimum low pulse width 17 ns at VCC=6 V.
10	QE	output	Parallel output bit E (fifth stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
11	QF	output	Parallel output bit F (sixth stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
12	QG	output	Parallel output bit G (seventh stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
13	QH	output	Parallel output bit H (eighth/last stage of the shift register). CMOS push-pull output; ±4 mA drive at 5 V.
14	VCC	power_in	Positive supply voltage, 2 V to 6 V (recommended 5 V nominal). ICC max 8 µA at 25 °C.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

SN74HC164PWR
SN74HC164PWRD
SN74HC164PWRN
SN74HC164PWRNS
SN74HC164PWRJ
SN74HC164PWRW
SN74HC164PWRFK

CAD (KiCad official)

Symbol: SN74HC164PWR
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74hc164pwr.step`	194 KB	You want the bare part, or you mark your own boards.
`sn74hc164pwr-etched.step`	2.5 MB	You want the part with `SN74HC164PWR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 632 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Texas Instruments datasheet (38 pp, sha256 51860c45fddf000a, retrieved 2026-08-17, tier: manufacturer)
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