SN74HC112DR from Texas Instruments, in a SOIC-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	1CLK	input	Flip-flop 1 clock input. Data at 1J/1K is transferred to 1Q on the negative (falling) edge of this clock.
2	1K	input	Flip-flop 1 K data input. Sampled on the falling edge of 1CLK per the J-K function table.
3	1J	input	Flip-flop 1 J data input. Sampled on the falling edge of 1CLK per the J-K function table.
4	1PRE	input	Flip-flop 1 asynchronous preset, active LOW. Driving low forces 1Q high regardless of clock, J, K.
5	1Q	output	Flip-flop 1 true (Q) output. Push-pull CMOS output capable of ±4 mA drive at VCC = 5 V.
6	1Q_N	output	Flip-flop 1 complementary (Q-bar) output. Push-pull CMOS output, complement of 1Q under normal operation.
7	2Q_N	output	Flip-flop 2 complementary (Q-bar) output. Push-pull CMOS output, complement of 2Q under normal operation.
8	GND	power_in	Ground reference (0 V) for the device.
9	2Q	output	Flip-flop 2 true (Q) output. Push-pull CMOS output capable of ±4 mA drive at VCC = 5 V.
10	2PRE	input	Flip-flop 2 asynchronous preset, active LOW. Driving low forces 2Q high regardless of clock, J, K.
11	2J	input	Flip-flop 2 J data input. Sampled on the falling edge of 2CLK per the J-K function table.
12	2K	input	Flip-flop 2 K data input. Sampled on the falling edge of 2CLK per the J-K function table.
13	2CLK	input	Flip-flop 2 clock input. Data at 2J/2K is transferred to 2Q on the negative (falling) edge of this clock.
14	2CLR	input	Flip-flop 2 asynchronous clear, active LOW. Driving low forces 2Q low regardless of clock, J, K.
15	1CLR	input	Flip-flop 1 asynchronous clear, active LOW. Driving low forces 1Q low regardless of clock, J, K.
16	VCC	power_in	Positive supply voltage, 2 V to 6 V recommended (7 V absolute maximum). Bypass with 0.1 uF close to the pin.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-16
Category	Logic
Pins	16

Ordering variants

Same part, different packaging or reel option.

SN74HC112DRD
SN74HC112DR
SN74HC112DRG4
SN74HC112DRN
SN74HC112DRJ
SN74HC112DRW
SN74HC112DRFK

CAD (KiCad official)

Symbol: SN74HC112DR
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (21 pp, sha256 cded38abeff84d04, 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