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74LVXC3245MTCX

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by Ray

onsemi Buffer/Driver/Transceiver, TSSOP-24. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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74LVXC3245MTCX

onsemi · Buffer/Driver/Transceiver · TSSOP-24

74LVXC3245MTCX from onsemi, in a TSSOP-24. 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 VCCA power_in A-side supply. Dedicated 3 V rail (2.7 V to 3.6 V recommended) that powers the A-port I/O buffers.
2 T/R input Transmit/Receive direction control. HIGH transmits data from bus A to bus B; LOW receives data from bus B to bus A. TTL-compatible input.
3 A0 bidirectional Side A bit 0. Bidirectional 3 V I/O; acts as input when T/R=LOW and OE=LOW, or as 3-STATE output when T/R=HIGH and OE=LOW.
4 A1 bidirectional Side A bit 1. Bidirectional 3 V I/O port pin.
5 A2 bidirectional Side A bit 2. Bidirectional 3 V I/O port pin.
6 A3 bidirectional Side A bit 3. Bidirectional 3 V I/O port pin.
7 A4 bidirectional Side A bit 4. Bidirectional 3 V I/O port pin.
8 A5 bidirectional Side A bit 5. Bidirectional 3 V I/O port pin.
9 A6 bidirectional Side A bit 6. Bidirectional 3 V I/O port pin.
10 A7 bidirectional Side A bit 7. Bidirectional 3 V I/O port pin.
11 GND power_in Ground reference (0 V). Tie all GND pins to the board ground plane.
12 GND power_in Ground reference (0 V). Tie all GND pins to the board ground plane.
13 GND power_in Ground reference (0 V). Tie all GND pins to the board ground plane.
14 B7 bidirectional Side B bit 7. Bidirectional VCCB-level I/O (3 V to 5 V) that tracks VCCB.
15 B6 bidirectional Side B bit 6. Bidirectional VCCB-level I/O (3 V to 5 V).
16 B5 bidirectional Side B bit 5. Bidirectional VCCB-level I/O (3 V to 5 V).
17 B4 bidirectional Side B bit 4. Bidirectional VCCB-level I/O (3 V to 5 V).
18 B3 bidirectional Side B bit 3. Bidirectional VCCB-level I/O (3 V to 5 V).
19 B2 bidirectional Side B bit 2. Bidirectional VCCB-level I/O (3 V to 5 V).
20 B1 bidirectional Side B bit 1. Bidirectional VCCB-level I/O (3 V to 5 V).
21 B0 bidirectional Side B bit 0. Bidirectional VCCB-level I/O (3 V to 5 V).
22 OE input Active-LOW output enable. When LOW, the transceiver is enabled in the direction set by T/R. When HIGH, both A and B ports go to 3-STATE (HIGH-Z) and VCCB is allowed to float - required for PCMCIA card insertion/removal.
23 NC unconnected No internal connection. Leave unconnected or tie as convenient.
24 VCCB power_in B-side supply. Accepts 3 V to 5.5 V (recommended 3.0 V to 5.5 V); sets the B-port logic level. May float when OE is HIGH (PCMCIA hot-swap support).

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-24
Category Logic
Pins 24

Ordering variants

Same part, different packaging or reel option.

  • 74LVXC3245MTCX
  • 74LVXC3245MTCXWM
  • 74LVXC3245MTCXQSC

CAD (KiCad official)

  • Symbol: 74LVXC3245MTCX
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: onsemi datasheet (11 pp, sha256 a8f33038b93e3f2a, 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