component
74LVXC3245MTCX
Public Made by Adomby adom
onsemi Buffer/Driver/Transceiver, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown74LVXC3245MTCX
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.
74LVXC3245MTCX74LVXC3245MTCXWM74LVXC3245MTCXQSC
CAD (KiCad official)
- Symbol:
74LVXC3245MTCX - Footprint:
Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm - 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files:
74lvxc3245mtcx-etched.step/74lvxc3245mtcx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74lvxc3245mtcx.step/74lvxc3245mtcx.glbare the bare package body.
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).