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93LC46B-I

Microchip Tech · EEPROM · DIP-8

93LC46B-I from Microchip Tech, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CS input A high level selects the device and a low level deselects it and forces it into Standby mode, with CS low for 250 ns minimum (TCSL) between consecutive instructions.
2 CLK input The Serial Clock synchronizes communication, with opcodes, address and data bits clocked in and data bits clocked out on the positive edge of CLK.
3 DI input Data In clocks in a Start bit, opcode, address and data synchronously with the CLK input.
4 DO output Data Out outputs data synchronously with CLK in Read mode (TPD after the positive edge of CLK) and provides Ready/Busy status during erase and write cycles when CS is brought high after TCSL.
5 VSS power_in Ground reference for the device.
6 ORG/NC unconnected On 93XX46A/B devices this pin is No Internal Connection (ORG is only used on the 93XX46C), so for the 93LC46B it has no internal connection and must not be relied on as an ORG input.
7 NC unconnected No Internal Connection.
8 VCC power_in Power supply; the 93LC46B operates from 2.5 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package DIP-8
Category Memory
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
High-level input voltage VIH1 2 V VCC 2.7V 3
Low-level input voltage VIL1 -0.3 0.8 V VCC 2.7V 3
Low-level input voltage VIL2 -0.3 V VCC 2.7V 3
Low-level output voltage VOL1 0.4 V IOL = 2.1 mA, VCC = 4.5V 3
Low-level output voltage VOL2 0.2 V IOL = 100 µA, VCC = 2.5V 3
High-level output voltage VOH1 2.4 V IOH = -400 µA, VCC = 4.5V 3
Input leakage current ILI -1 1 µA VIN = VSS or VCC 3
Output leakage current ILO -1 1 µA VOUT = VSS or VCC 3
Pin capacitance (all inputs/outputs) CIN, COUT 7 pF VIN/VOUT = 0V (Note 1); TA = 25°C, FCLK = 1 MHz 3
Standby current ICCS 1 µA I-Temp; CLK = CS = 0V; ORG = DI = VSS or VCC (Notes 2, 3) 3
Clock frequency FCLK 2 MHz 2.5V ≤ VCC ≤ 5.5V 4
Clock high time TCKH 250 ns 2.5V ≤ VCC ≤ 5.5V 4
Clock low time TCKL 200 ns 2.5V ≤ VCC ≤ 5.5V 4
Chip Select setup time TCSS 100 ns 2.5V ≤ VCC ≤ 4.5V 4
Chip Select setup time TCSS 50 ns 4.5V ≤ VCC ≤ 5.5V 4
Chip Select hold time TCSH 0 ns 1.8V ≤ VCC ≤ 5.5V 4
Chip Select low time TCSL 250 ns 1.8V ≤ VCC ≤ 5.5V 4
Data input setup time TDIS 100 ns 2.5V ≤ VCC ≤ 5.5V 4
Data input hold time TDIH 100 ns 2.5V ≤ VCC ≤ 5.5V 4
Data output delay time TPD 200 ns 4.5V ≤ VCC ≤ 5.5V, CL = 100 pF 4
Data output delay time TPD 250 ns 2.5V ≤ VCC ≤ 4.5V, CL = 100 pF 4
Data output disable time TCZ 100 ns 4.5V ≤ VCC ≤ 5.5V (Note 1) 4
Data output disable time TCZ 200 ns 1.8V ≤ VCC ≤ 4.5V (Note 1) 4
Status valid time TSV 200 ns 4.5V ≤ VCC ≤ 5.5V, CL = 100 pF 4
Status valid time TSV 300 ns 2.5V ≤ VCC ≤ 4.5V, CL = 100 pF 4
Program cycle time TWC 6 ms Erase/Write mode (AA and LC versions) 4
Erase all cycle time TEC 6 ms ERAL mode, 4.5V ≤ VCC ≤ 5.5V 4
Write all cycle time TWL 15 ms WRAL mode, 4.5V ≤ VCC ≤ 5.5V 4
Supply voltage (VCC) absolute maximum VCC 7 V 3
All inputs and outputs w.r.t. VSS -0.6 V w.r.t. VSS; upper limit printed as VCC + 1.0V 3
Storage temperature -65 150 °C 3
Ambient temperature with power applied -40 125 °C 3
Supply voltage range VCC 2.5 5.5 V 93LC46B device selection table 1
Industrial ambient temperature range TA -40 85 °C Industrial (I) grade (suffix -I) 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin 2x3 DFN/TDFN and 8-lead TSSOP. All packages are Pb-free (Matte Tin) finish. 1

CAD (KiCad official)

  • Symbol: 93LC46B-I
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: DIP-8 (KiCad packages3D, STEP)
  • 3D model files: 93lc46b-i-etched.step / 93lc46b-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 93lc46b-i.step / 93lc46b-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (38 pp, sha256 bf6ca0ca8d588071, retrieved 2026-11-05, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF