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aip74hc245ta20-tr
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Wuxi I core Elec AiP74HC245TA20 TR Latches, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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markdownAiP74HC245TA20.TR
Wuxi I core Elec AiP74HC245TA20 TR · Latches · TSSOP-20
AiP74HC245TA20.TR from Wuxi I core Elec AiP74HC245TA20 TR, in a TSSOP-20. 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 | DIR | input | Transmission direction control. When DIR=L, data flows from B to A (B is input, A is output). When DIR=H, data flows from A to B (A is input, B is output). CMOS-level input (TTL-level on HCT variant). |
| 2 | A0 | bidirectional | Port A data I/O, bit 0. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. High-impedance when OE=H. |
| 3 | A1 | bidirectional | Port A data I/O, bit 1. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 4 | A2 | bidirectional | Port A data I/O, bit 2. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 5 | A3 | bidirectional | Port A data I/O, bit 3. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 6 | A4 | bidirectional | Port A data I/O, bit 4. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 7 | A5 | bidirectional | Port A data I/O, bit 5. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 8 | A6 | bidirectional | Port A data I/O, bit 6. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 9 | A7 | bidirectional | Port A data I/O, bit 7. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 10 | GND | power_in | Ground (0V) reference for the device. |
| 11 | B7 | bidirectional | Port B data I/O, bit 7. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 12 | B6 | bidirectional | Port B data I/O, bit 6. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 13 | B5 | bidirectional | Port B data I/O, bit 5. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 14 | B4 | bidirectional | Port B data I/O, bit 4. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 15 | B3 | bidirectional | Port B data I/O, bit 3. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 16 | B2 | bidirectional | Port B data I/O, bit 2. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 17 | B1 | bidirectional | Port B data I/O, bit 1. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 18 | B0 | bidirectional | Port B data I/O, bit 0. Bidirectional bus-transceiver pin; direction set by DIR, enabled when OE is low. |
| 19 | ~{OE} | input | Output Enable, active low. When OE=L the transceiver is enabled and drives one port from the other (per DIR). When OE=H both A and B outputs are placed in high-impedance state. |
| 20 | VCC | power_in | Supply voltage. HC variant: 2.0 V to 6.0 V (typ 5.0 V). HCT variant: 4.5 V to 5.5 V (typ 5.0 V). Absolute maximum 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I core Elec AiP74HC245TA20 TR |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
Ordering variants
AiP74HC245TA20.TRAiP74HC245TA20.TRTA20.TBAiP74HC245TA20.TRSA20.TRAiP74HC245TA20.TRSA20.TBAiP74HC245TA20.TRDA20.TB
CAD (KiCad official)
- Symbol:
AiP74HC245TA20.TR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Wuxi I core Elec AiP74HC245TA20 TR datasheet (None pp, sha256
6695932f711a2bdf, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).