GC26L31P from SX globalchip, 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	1A	input	Channel 1 driver input (TTL-compatible). VIH >= 2V, VIL <= 0.8V. Drives complementary outputs 1Y (non-inverting) and 1Z (inverting).
2	1Y	tri_state	Channel 1 driver Y output (non-inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
3	1Z	tri_state	Channel 1 driver Z output (inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
4	G	input	Active-high enable for all four drivers. When G = H (or GN = L), outputs are active; when G = L and GN = H, outputs are High-Z.
5	2Z	tri_state	Channel 2 driver Z output (inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
6	2Y	tri_state	Channel 2 driver Y output (non-inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
7	2A	input	Channel 2 driver input (TTL-compatible). VIH >= 2V, VIL <= 0.8V. Drives complementary outputs 2Y (non-inverting) and 2Z (inverting).
8	GND	power_in	Ground / 0V reference for logic and output stages.
9	3A	input	Channel 3 driver input (TTL-compatible). VIH >= 2V, VIL <= 0.8V. Drives complementary outputs 3Y (non-inverting) and 3Z (inverting).
10	3Y	tri_state	Channel 3 driver Y output (non-inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
11	3Z	tri_state	Channel 3 driver Z output (inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
12	GN	input	Active-low enable for all four drivers (complement of G). Outputs are High-Z only when G = L and GN = H.
13	4Z	tri_state	Channel 4 driver Z output (inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
14	4Y	tri_state	Channel 4 driver Y output (non-inverting side of differential pair). VOH >= 2.5V at IOH = -20 mA, VOL <= 0.5V at IOL = 20 mA. High-Z when disabled.
15	4A	input	Channel 4 driver input (TTL-compatible). VIH >= 2V, VIL <= 0.8V. Drives complementary outputs 4Y (non-inverting) and 4Z (inverting).
16	VCC	power_in	Positive supply, 4.75V to 5.25V (5V nominal). Typical supply current Icc = 32 mA (80 mA max) with outputs disabled.

Key specifications

Parameter	Value
Manufacturer	SX globalchip
Package	TSSOP-16
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

GC26L31PP
GC26L31PS

CAD (KiCad official)

Symbol: GC26L31P
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gc26l31p.step`	205 KB	You want the bare part, or you mark your own boards.
`gc26l31p-etched.step`	2.2 MB	You want the part with `GC26L31P` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 545 faces against 255 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: SX globalchip datasheet (10 pp, sha256 fa2f5e0cf7c0776e, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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