93LC46BT-I from Microchip, in a SOIC-8-150mil. 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	CS	input	Chip Select. Active-high; a logic 1 selects the device, a logic 0 deselects and forces standby. CS must be low for at least 250 ns (TCSL) between consecutive instructions.
2	CLK	input	Serial Data Clock. Synchronizes master-to-slave communication. Opcodes, address and data bits are latched on the rising edge; data is clocked out on the rising edge. Max FCLK = 3 MHz at VCC ≥ 4.5 V (2 MHz at VCC ≥ 2.5 V).
3	DI	input	Serial Data Input. Clocks in the Start bit, opcode, address and write data synchronously with CLK. VIH ≥ 2.0 V (VCC ≥ 2.7 V) or 0.7·VCC (VCC < 2.7 V).
4	DO	tri_state	Serial Data Output. Outputs read data synchronously with CLK (TPD after rising edge). Also drives Ready/BUSY status during erase/write cycles when CS is brought high (BUSY = 0, Ready = 1). High-Z when idle.
5	VSS	power_in	Ground reference for all logic and supply. All input/output levels referenced to VSS.
6	NC	unconnected	No Internal Connection on 93XX46A/B devices (this pin is the ORG memory-configuration input only on the 93XX46C variant). Leave floating or tie to VSS.
7	NC	unconnected	No Internal Connection. May be left floating.
8	VCC	power_in	Power supply, 2.5 V to 5.5 V for 93LC-family (industrial temp). Typical read current 500 µA @ 3.0 V / 2 MHz; standby current typ. 1 µA (I-temp). Decouple with a 0.1 µF capacitor to VSS.

Key specifications

Parameter	Value
Manufacturer	Microchip
Package	SOIC-8-150mil
Category	Memory
Pins	8

Ordering variants

93LC46BT-II/SN
93LC46BT-I/SN
93LC46BT-II/P
93LC46BT-II/ST
93LC46BT-I/ST
93LC46BT-II/MS
93LC46BT-I/MS
93LC46BT-II/OT
93LC46BT-I/OT
93LC46BT-II/MC
93LC46BT-I/MC
93LC46BT-II/MN
93LC46BT-I/MN
93LC46BT-II/SN (rotated marking, e.g. 93LC46BX)

CAD (KiCad official)

Symbol: 93LC46BT-I
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8-150mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`93lc46bt-i.step`	122 KB	You want the bare part, or you mark your own boards.
`93lc46bt-i-etched.step`	2.0 MB	You want the part with `93LC46BT-I` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 498 faces against 147 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: Microchip datasheet (38 pp, sha256 65aab1f681012229, 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