74HC21D from Nexperia, in a SOIC-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	1A	input	Data input A of AND gate 1. CMOS input level referenced to V_CC; includes input clamp diode.
2	1B	input	Data input B of AND gate 1. CMOS input level referenced to V_CC; includes input clamp diode.
3	N.C.	unconnected	Not connected. Leave floating or tie to a defined potential; no internal bond.
4	1C	input	Data input C of AND gate 1. CMOS input level referenced to V_CC; includes input clamp diode.
5	1D	input	Data input D of AND gate 1. CMOS input level referenced to V_CC; includes input clamp diode.
6	1Y	output	Data output of AND gate 1 (1Y = 1A · 1B · 1C · 1D). Push-pull CMOS output, ±25 mA absolute maximum.
7	GND	power_in	Ground reference (0 V).
8	2Y	output	Data output of AND gate 2 (2Y = 2A · 2B · 2C · 2D). Push-pull CMOS output, ±25 mA absolute maximum.
9	2A	input	Data input A of AND gate 2. CMOS input level referenced to V_CC; includes input clamp diode.
10	2B	input	Data input B of AND gate 2. CMOS input level referenced to V_CC; includes input clamp diode.
11	N.C.	unconnected	Not connected. Leave floating or tie to a defined potential; no internal bond.
12	2C	input	Data input C of AND gate 2. CMOS input level referenced to V_CC; includes input clamp diode.
13	2D	input	Data input D of AND gate 2. CMOS input level referenced to V_CC; includes input clamp diode.
14	VCC	power_in	Supply voltage, 2.0 V to 6.0 V (5.0 V typ). Absolute max 7 V. Bypass locally to GND with a 100 nF ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	Nexperia
Package	SOIC-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

74HC21DD
74HC21DPW

CAD (KiCad official)

Symbol: 74HC21D
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Nexperia datasheet (11 pp, sha256 1f36967884668dca, 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