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PI3B3257LEX

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Diodes Incorporated Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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PI3B3257LEX

Diodes Incorporated · Signal Switches, Multiplexers, Decoders · TSSOP-16

PI3B3257LEX from Diodes Incorporated, in a TSSOP-16. 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 S input Select input that connects IA0-ID0 to YA-YD when LOW and IA1-ID1 when HIGH, with E selecting the disable state (page 1 truth table).
2 IA0 input Data input A0 of the first 2:1 mux channel, passed to YA when S = 0 and E = L.
3 IA1 input Data input A1 of the first 2:1 mux channel, passed to YA when S = 1 and E = L.
4 YA tri_state Channel A data output, three-state, forced to Hi-Z when E is HIGH; the switch adds about 5Ω on-resistance with near-zero propagation delay.
5 IB0 input Data input B0 of the second 2:1 mux channel, passed to YB when S = 0 and E = L.
6 IB1 input Data input B1 of the second 2:1 mux channel, passed to YB when S = 1 and E = L.
7 YB tri_state Channel B data output, three-state, forced to Hi-Z when E is HIGH; the switch adds about 5Ω on-resistance with near-zero propagation delay.
8 GND power_in Ground; must be connected to supply ground for proper device operation, and GND and VCC must be applied before any signal on I/O or control pins.
9 YC tri_state Channel C data output, three-state, forced to Hi-Z when E is HIGH; the switch adds about 5Ω on-resistance with near-zero propagation delay.
10 IC1 input Data input C1 of the third 2:1 mux channel, passed to YC when S = 1 and E = L; control inputs tolerate up to 3.6V regardless of VCC.
11 IC0 input Data input C0 of the third 2:1 mux channel, passed to YC when S = 0 and E = L; control inputs tolerate up to 3.6V regardless of VCC.
12 YD tri_state Channel D data output, three-state, forced to Hi-Z when E is HIGH; the switch adds about 5Ω on-resistance with near-zero propagation delay.
13 ID1 input Data input D1 of the fourth 2:1 mux channel, passed to YD when S = 1 and E = L.
14 ID0 input Data input D0 of the fourth 2:1 mux channel, passed to YD when S = 0 and E = L.
15 E input Active-low enable: when HIGH all Y outputs go Hi-Z (disable), and when LOW the selected inputs pass through per S; the datasheet states logic inputs may be driven up to 3.6V regardless of VCC.
16 VCC power_in 3.3V supply (3.3V ±10% over the operating range) with absolute maximum supply to ground of −0.5V to +4.6V; apply VCC before signals.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package TSSOP-16
Category Logic
Pins 16

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input HIGH Voltage VIH 2 V Guaranteed Logic HIGH Level; over operating range, VCC = 3.3V ±10% 2
Input LOW Voltage VIL -0.5 0.8 V Guaranteed Logic LOW Level; over operating range, VCC = 3.3V ±10% 2
Input HIGH Current IIH -1 1 µA VCC = Max., VIN = VCC 2
Input LOW Current IIL -1 1 µA VCC = Max., VIN = GND 2
High Impedance Output Current IOZH -1 1 µA 0 ≤ In, Yn ≤ VCC 2
Clamp Diode Voltage VIK -1.2 V VCC = Min., IIN = -18mA 2
Switch On-Resistance RON 5 8 Ω VCC = Min., VIN = 0.0V, Ion = 48mA or 64mA 2
Switch On-Resistance RON 8 17 Ω VCC = Min., VIN = 2.4V, ION = 15mA 2
Quiescent Power Supply Current ICC 0.1 3 µA VCC = Max. VIN = GND or VCC 2
Supply Current per Input @ TTL HIGH ΔICC 750 µA VCC = Max. VIN = 3.0 2
Propagation Delay In to Yn tIY 0.25 ns CL = 50pF RL = 500Ω 3
Bus Select Time, Sn to Yn tSY 1 4.5 ns CL = 50pF RL = 500Ω 3
Bus Enable Time, E to Yn tPZH / tPZL 1 4.5 ns CL = 50pF RL = 500Ω 3
Bus Disable Time, E to Yn tPHZ / tPLZ 1 4.8 ns CL = 50pF RL = 500Ω 3
Storage Temperature TSTG -65 150 °C 2
Ambient Temperature with Power Applied TA -40 85 °C Power applied 2
Supply Voltage to Ground Potential VCC -0.5 4.6 V 2
DC Input Voltage VIN -0.5 4.6 V 2
DC Output Current IO 120 mA 2
Power Dissipation PD 0.5 W 2
Ambient Temperature (operating range) TA -40 85 °C Over the Operating Range 2
Supply voltage tolerance VCC -10 10 % VCC = 3.3V ±10% over operating range 2
Logic control input drive voltage VIN 3.6 V Logic control inputs, regardless of supply voltage 3

CAD (KiCad official)

  • Symbol: PI3B3257LEX
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: pi3b3257lex-etched.step / pi3b3257lex-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pi3b3257lex.step / pi3b3257lex.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (8 pp, sha256 4641b29839e67287, retrieved 2026-10-19, tier: lcsc)
  • 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