SN74HC20N from XBLW, in a DIP-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	Gate 1 data input A. CMOS logic input; VIH ≥ 1.5/3.15/4.2 V at VCC = 2.0/4.5/6.0 V. Input clamp diodes allow interfacing above VCC via current-limiting resistors (IIK ≤ ±20 mA).
2	1B	input	Gate 1 data input B. CMOS logic input feeding the first 4-input NAND gate.
3	NC	unconnected	Not connected. Leave floating or tie to any convenient net; no internal bond.
4	1C	input	Gate 1 data input C. CMOS logic input feeding the first 4-input NAND gate.
5	1D	input	Gate 1 data input D. CMOS logic input feeding the first 4-input NAND gate.
6	1Y	output	Gate 1 data output. Push-pull CMOS output; 1Y = NAND(1A,1B,1C,1D). VOH ≥ VCC-0.1 V at IO = -20 µA and ≥ 3.98 V at IO = -4.0 mA / VCC = 4.5 V.
7	GND	power_in	Ground reference (0 V). Maximum ground current IGND = 50 mA.
8	2Y	output	Gate 2 data output. Push-pull CMOS output; 2Y = NAND(2A,2B,2C,2D).
9	2A	input	Gate 2 data input A. CMOS logic input feeding the second 4-input NAND gate.
10	2B	input	Gate 2 data input B. CMOS logic input feeding the second 4-input NAND gate.
11	NC	unconnected	Not connected. No internal bond; leave floating or tie to any convenient net.
12	2C	input	Gate 2 data input C. CMOS logic input feeding the second 4-input NAND gate.
13	2D	input	Gate 2 data input D. CMOS logic input feeding the second 4-input NAND gate.
14	VCC	power_in	Positive supply voltage. Operating range 2.0 V to 6.0 V (recommended); absolute maximum +7 V. Bypass with a local 100 nF ceramic to GND.

Key specifications

Parameter	Value
Manufacturer	XBLW
Package	DIP-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

SN74HC20NN
SN74HC20NDTR
SN74HC20NTDTR

CAD (KiCad official)

Symbol: SN74HC20N
Footprint: Package_DIP:DIP-14_W7.62mm
3D model: DIP-14 (KiCad packages3D, STEP)

Provenance

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

Datasheet: XBLW datasheet (16 pp, sha256 e98044ffc9e7b92c, 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