component
74HC245N
Public Made by Adomby adom
HGSEMI Buffers, Drivers, Receivers, Transceivers, DIP-20. Pinout cross-checked by two models against 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
markdown74HC245N
HGSEMI · Buffers, Drivers, Receivers, Transceivers · DIP-20
74HC245N from HGSEMI, in a DIP-20. 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 | DIR | input | Transmission direction control input that selects the direction of data transfer between the A and B ports. |
| 2 | A0 | bidirectional | Data input/output port A0 of the 8-bit bus transceiver, with three-state outputs. |
| 3 | A1 | bidirectional | Data input/output port A1 of the 8-bit bus transceiver, with three-state outputs. |
| 4 | A2 | bidirectional | Data input/output port A2 of the 8-bit bus transceiver, with three-state outputs. |
| 5 | A3 | bidirectional | Data input/output port A3 of the 8-bit bus transceiver, with three-state outputs. |
| 6 | A4 | bidirectional | Data input/output port A4 of the 8-bit bus transceiver, with three-state outputs. |
| 7 | A5 | bidirectional | Data input/output port A5 of the 8-bit bus transceiver, with three-state outputs. |
| 8 | A6 | bidirectional | Data input/output port A6 of the 8-bit bus transceiver, with three-state outputs. |
| 9 | A7 | bidirectional | Data input/output port A7 of the 8-bit bus transceiver, with three-state outputs. |
| 10 | GND | power_in | Ground (0 V) reference for the device. |
| 11 | B7 | bidirectional | Data input/output port B7 of the 8-bit bus transceiver, with three-state outputs. |
| 12 | B6 | bidirectional | Data input/output port B6 of the 8-bit bus transceiver, with three-state outputs. |
| 13 | B5 | bidirectional | Data input/output port B5 of the 8-bit bus transceiver, with three-state outputs. |
| 14 | B4 | bidirectional | Data input/output port B4 of the 8-bit bus transceiver, with three-state outputs. |
| 15 | B3 | bidirectional | Data input/output port B3 of the 8-bit bus transceiver, with three-state outputs. |
| 16 | B2 | bidirectional | Data input/output port B2 of the 8-bit bus transceiver, with three-state outputs. |
| 17 | B1 | bidirectional | Data input/output port B1 of the 8-bit bus transceiver, with three-state outputs. |
| 18 | B0 | bidirectional | Data input/output port B0 of the 8-bit bus transceiver, with three-state outputs. |
| 19 | OE | input | Active-low output enable input; when driven high, the A and B ports are placed in the high-impedance (Z) state. |
| 20 | VCC | power_in | Supply voltage; recommended operating range 2.0 V to 6.0 V, with an absolute maximum of 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-20 |
| Category | Logic |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 | 7 | V | 4 | ||
| Input clamp current | Ilk | -20 | 20 | mA | VI<-0.5V or VI>Vcc+0.5V | 4 | |
| Output clamp current | Iok | -20 | 20 | mA | Vo<-0.5V or Vo>Vcc+0.5V | 4 | |
| Output or input/output current | Io | -35 | 35 | mA | -0.5V<Vo<Vcc+0.5V | 4 | |
| VCC or GND current | ICC, IGND | -70 | 70 | mA | 4 | ||
| Storage temperature | Tstg | -65 | 150 | ℃ | 4 | ||
| Power dissipation, DIP20 package | PD | 750 | mW | DIP20 package (note 1) | 4 | ||
| Soldering temperature | TL | 260 | ℃ | 10 s | 4 | ||
| Supply voltage | VCC | 2 | 5 | 6 | V | 4 | |
| Input voltage | VI | 0 | V | maximum printed as Vcc | 4 | ||
| Output voltage | Vo | 0 | V | maximum printed as Vcc | 4 | ||
| Operating ambient temperature | Tamb | -40 | 85 | ℃ | 4 | ||
| Input rise and fall time | tr, tf | 1000 | ns | VCC=2.0V | 4 | ||
| Input rise and fall time | tr, tf | 6 | 500 | ns | VCC=4.5V | 4 | |
| Input rise and fall time | tr, tf | 400 | ns | VCC=6.0V | 4 | ||
| High-level input voltage | VIH | 1.5 | 1.2 | V | Tamb=25℃, GND=0; VCC=2.0V | 5 | |
| High-level input voltage | VIH | 3.15 | 2.4 | V | Tamb=25℃, GND=0; VCC=4.5V | 5 | |
| High-level input voltage | VIH | 4.2 | 3.2 | V | Tamb=25℃, GND=0; VCC=6.0V | 5 | |
| Low-level input voltage | VIL | 0.8 | 0.5 | V | Tamb=25℃, GND=0; VCC=2.0V | 5 | |
| Low-level input voltage | VIL | 2.1 | 1.35 | V | Tamb=25℃, GND=0; VCC=4.5V | 5 | |
| Low-level input voltage | VIL | 2.8 | 1.8 | V | Tamb=25℃, GND=0; VCC=6.0V | 5 | |
| High-level output voltage | VOH | 1.9 | 2 | V | Tamb=25℃; VI=VIH or VIL; VCC=2.0V, IO=-20uA | 5 | |
| High-level output voltage | VOH | 4.4 | 4.5 | V | Tamb=25℃; VI=VIH or VIL; VCC=4.5V, IO=-20uA | 5 | |
| High-level output voltage | VOH | 5.9 | 6 | V | Tamb=25℃; VI=VIH or VIL; VCC=6.0V, IO=-20uA | 5 | |
| High-level output voltage | VOH | 3.98 | 4.32 | V | Tamb=25℃; VI=VIH or VIL; VCC=4.5V, IO=-6.0mA | 5 | |
| High-level output voltage | VOH | 5.7 | 6 | V | Tamb=25℃; VI=VIH or VIL; VCC=6.0V, IO=-4mA | 5 | |
| Low-level output voltage | VOL | 0 | 0.1 | V | Tamb=25℃; VI=VIH or VIL; VCC=2.0V, IO=20uA | 5 | |
| Low-level output voltage | VOL | 0.15 | 0.3 | V | Tamb=25℃; VI=VIH or VIL; VCC=4.5V, IO=6.0mA | 5 | |
| Low-level output voltage | VOL | 0.16 | 0.3 | V | Tamb=25℃; VI=VIH or VIL; VCC=6.0V, IO=4mA | 5 | |
| Input leakage current | ILI | -1 | 0.1 | 1 | uA | Tamb=25℃; VI=VCC or GND, VCC=6.0V | 5 |
| Off-state output current | IOZ | -5 | 5 | uA | Tamb=25℃; VI=VIH or VIL, Vo=VCC or GND, VCC=6.0V | 5 | |
| Quiescent supply current | ICC | -1 | 10 | uA | Tamb=25℃; VI=VCC or GND, VCC=6.0V, IO=0 | 5 | |
| Propagation delay An to Bn or Bn to An | tPHL/tPLH | 25 | 900 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=2.0V; Fig.4 | 7 | |
| Propagation delay An to Bn or Bn to An | tPHL/tPLH | 9 | 18 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=4.5V; Fig.4 | 7 | |
| Propagation delay An to Bn or Bn to An | tPHL/tPLH | 7 | 15 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=6.0V; Fig.4 | 7 | |
| Output transition time | tTHL/tTLH | 14 | 60 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=2.0V | 7 | |
| Output transition time | tTHL/tTLH | 5 | 12 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=4.5V | 7 | |
| Output transition time | tTHL/tTLH | 4 | 10 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=6.0V | 7 | |
| Output enable time to high or low level | tPZH/tPZl | 30 | 150 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=2.0V; Fig.5 | 7 | |
| Output enable time to high or low level | tPZH/tPZl | 11 | 30 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=4.5V; Fig.5 | 7 | |
| Output enable time to high or low level | tPZH/tPZl | 9 | 26 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=6.0V; Fig.5 | 7 | |
| Output disable time to high or low level | tPHZ/tPLZ | 41 | 150 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=2.0V | 7 | |
| Output disable time to high or low level | tPHZ/tPLZ | 15 | 30 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=4.5V | 7 | |
| Output disable time to high or low level | tPHZ/tPLZ | 12 | 26 | ns | Tamb=25℃, CL=50pF, tr=tf=6ns; VCC=6.0V | 7 | |
| High-level input voltage | VIH | 4.2 | V | Tamb=-40~+85℃; VCC=6.0V | 6 | ||
| Low-level input voltage | VIL | 1.8 | V | Tamb=-40~+85℃; VCC=6.0V | 6 | ||
| High-level output voltage | VOH | 5.9 | V | Tamb=-40~+85℃; VI=VIH or VIL; VCC=6.0V, IO=-20uA | 6 | ||
| High-level output voltage | VOH | 5.34 | V | Tamb=-40~+85℃; VI=VIH or VIL; VCC=6.0V, IO=-4mA | 6 | ||
| Low-level output voltage | VOL | 0.1 | V | Tamb=-40~+85℃; VI=VIH or VIL; VCC=6.0V, IO=20uA | 6 | ||
| Low-level output voltage | VOL | 0.33 | V | Tamb=-40~+85℃; VI=VIH or VIL; VCC=6.0V, IO=4mA | 6 | ||
| Input leakage current | ILI | -1 | 1 | uA | Tamb=-40~+85℃; VI=VCC or GND, VCC=6.0V | 6 | |
| Off-state output current | IOZ | -5 | 5 | uA | Tamb=-40~+85℃; VI=VIH or VIL, Vo=VCC or GND, VCC=6.0V | 6 | |
| Quiescent supply current | ICC | 80 | uA | Tamb=-40~+85℃; VI=VCC or GND, VCC=6.0V, IO=0 | 6 | ||
| Propagation delay An to Bn or Bn to An | tPHL/tPLH | 20 | ns | Tamb=-40~+85℃, CL=50pF, tr=tf=6ns; VCC=6.0V; Fig.4 | 8 | ||
| Output enable time to high or low level | tPZH/tPZl | 33 | ns | Tamb=-40~+85℃, CL=50pF, tr=tf=6ns; VCC=6.0V; Fig.5 | 8 | ||
| Output disable time to high or low level | tPHZ/tPLZ | 33 | ns | Tamb=-40~+85℃, CL=50pF, tr=tf=6ns; VCC=6.0V | 8 | ||
| Quiescent supply current | ICC | 160 | uA | Tamb=-40~+125℃; VI=VCC or GND, VCC=6.0V, IO=0 | 7 |
CAD (KiCad official)
- Symbol:
74HC245N - Footprint:
Package_DIP:DIP-20_W7.62mm - 3D model: DIP-20 (KiCad packages3D, STEP)
- 3D model files:
74hc245n-etched.step/74hc245n-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hc245n.step/74hc245n.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (14 pp, sha256
430f66157c4aa735, retrieved 2026-10-14, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).