component
SN74HC279AN
Public Made by Adomby adom
lingxingic Latches, DIP-16. 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
markdownSN74HC279AN
lingxingic · Latches · DIP-16
SN74HC279AN from lingxingic, in a DIP-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 | 1R | input | Active-low reset input for latch 1; with both 1S̄1 and 1S̄2 high, a low on 1R̄ drives 1Q low. |
| 2 | 1S1 | input | Active-low set input 1 for latch 1; a low on either or both set inputs (1S̄1, 1S̄2) drives 1Q high when 1R̄ is high. |
| 3 | 1S2 | input | Active-low set input 2 for latch 1; a low on either or both set inputs (1S̄1, 1S̄2) drives 1Q high when 1R̄ is high. |
| 4 | 1Q | output | Data output of latch 1, which holds its previous level when neither set nor reset is active. |
| 5 | 2R | input | Active-low reset data input for latch 2; a low on 2R̄ with 2S̄ high drives 2Q low. |
| 6 | 2S | input | Active-low set data input for latch 2; a low on 2S̄ with 2R̄ high drives 2Q high. |
| 7 | 2Q | output | Data output of latch 2, which holds its previous level when neither set nor reset is active. |
| 8 | GND | power_in | Ground reference (0V) for all voltages. |
| 9 | 3Q | output | Data output of latch 3, which holds its previous level when neither set nor reset is active. |
| 10 | 3R | input | Active-low reset data input for latch 3; a low on 3R̄ with both 3S̄1 and 3S̄2 high drives 3Q low. |
| 11 | 3S1 | input | Active-low set input 1 for latch 3; a low on either or both set inputs (3S̄1, 3S̄2) drives 3Q high when 3R̄ is high. |
| 12 | 3S2 | input | Active-low set input 2 for latch 3; a low on either or both set inputs (3S̄1, 3S̄2) drives 3Q high when 3R̄ is high. |
| 13 | 4Q | output | Data output of latch 4, which holds its previous level when neither set nor reset is active. |
| 14 | 4R | input | Active-low reset data input for latch 4; a low on 4R̄ with 4S̄ high drives 4Q low. |
| 15 | 4S | input | Active-low set data input for latch 4; a low on 4S̄ with 4R̄ high drives 4Q high. |
| 16 | VCC | power_in | Supply voltage: 2.0V to 6.0V for SN74HC279 and 4.5V to 5.5V for SN74HCT279 per the recommended operating conditions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| Package | DIP-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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 7 | V | Voltages referenced to GND | 7 | ||
| Supply current | ICC | 50 | mA | - | 7 | ||
| Ground current | IGND | -50 | mA | - | 7 | ||
| Input clamping current | IIK | -20 | 20 | mA | VI < -0.5V or VI > VCC+0.5V | 7 | |
| Output clamping current | IOK | -20 | 20 | mA | VO < -0.5V or VO > VCC+0.5V | 7 | |
| Output current | IO | -25 | 25 | mA | -0.5V < VO < VCC+0.5V | 7 | |
| Storage temperature | Tstg | -65 | 150 | ℃ | - | 7 | |
| Soldering temperature | TL | 245 | ℃ | 10s, DIP package (SOP/TSSOP is 260) | 7 | ||
| Supply voltage | VCC | 2 | 5 | 6 | V | SN74HC279 variant | 7 |
| Input voltage | VI | 0 | V | SN74HC279; maximum printed as VCC | 7 | ||
| Output voltage | VO | 0 | V | SN74HC279; maximum printed as VCC | 7 | ||
| Ambient temperature | Tamb | -40 | 125 | ℃ | - | 7 | |
| HIGH-level input voltage | VIH | 1.5 | 1.2 | V | Tamb=-40℃ to +85℃; VCC=2.0V | 8 | |
| HIGH-level input voltage | VIH | 3.15 | 2.4 | V | Tamb=-40℃ to +85℃; VCC=4.5V | 8 | |
| HIGH-level input voltage | VIH | 4.2 | 3.2 | V | Tamb=-40℃ to +85℃; VCC=6.0V | 8 | |
| LOW-level input voltage | VIL | 0.8 | 0.5 | V | Tamb=-40℃ to +85℃; VCC=2.0V | 8 | |
| LOW-level input voltage | VIL | 2.1 | 1.35 | V | Tamb=-40℃ to +85℃; VCC=4.5V | 8 | |
| LOW-level input voltage | VIL | 2.8 | 1.8 | V | Tamb=-40℃ to +85℃; VCC=6.0V | 8 | |
| HIGH-level output voltage | VOH | 1.9 | 2 | V | Tamb=-40℃ to +85℃; VCC=2.0V; IO=-20uA | 8 | |
| HIGH-level output voltage | VOH | 4.4 | 4.5 | V | Tamb=-40℃ to +85℃; VCC=4.5V; IO=-20uA | 8 | |
| HIGH-level output voltage | VOH | 5.9 | 6 | V | Tamb=-40℃ to +85℃; VCC=6.0V; IO=-20uA | 8 | |
| HIGH-level output voltage | VOH | 3.84 | 4.32 | V | Tamb=-40℃ to +85℃; VCC=4.5V; IO=-4.0mA | 8 | |
| HIGH-level output voltage | VOH | 5.34 | 5.81 | V | Tamb=-40℃ to +85℃; VCC=6.0V; IO=-5.2mA | 8 | |
| LOW-level output voltage | VOL | 0 | 0.1 | V | Tamb=-40℃ to +85℃; VCC=2.0V; IO=20uA | 8 | |
| LOW-level output voltage | VOL | 0 | 0.1 | V | Tamb=-40℃ to +85℃; VCC=4.5V; IO=20uA | 8 | |
| LOW-level output voltage | VOL | 0 | 0.1 | V | Tamb=-40℃ to +85℃; VCC=6.0V; IO=20uA | 8 | |
| LOW-level output voltage | VOL | 0.15 | 0.33 | V | Tamb=-40℃ to +85℃; VCC=4.5V; IO=4.0mA | 8 | |
| LOW-level output voltage | VOL | 0.16 | 0.33 | V | Tamb=-40℃ to +85℃; VCC=6.0V; IO=5.2mA | 8 | |
| Input leakage current | II | -2 | 2 | uA | Tamb=-40℃ to +85℃; VCC=6.0V; VI=VCC or GND | 8 | |
| Supply current | ICC | 2 | uA | Tamb=-40℃ to +85℃; VCC=6.0V; VI=VCC or GND; IO=0A | 8 | ||
| HIGH-level input voltage | VIH | 1.5 | V | Tamb=-40℃ to +125℃; VCC=2.0V | 9 | ||
| HIGH-level input voltage | VIH | 3.15 | V | Tamb=-40℃ to +125℃; VCC=4.5V | 9 | ||
| HIGH-level input voltage | VIH | 4.2 | V | Tamb=-40℃ to +125℃; VCC=6.0V | 9 | ||
| LOW-level input voltage | VIL | 0.5 | V | Tamb=-40℃ to +125℃; VCC=2.0V | 9 | ||
| LOW-level input voltage | VIL | 1.35 | V | Tamb=-40℃ to +125℃; VCC=4.5V | 9 | ||
| LOW-level input voltage | VIL | 1.8 | V | Tamb=-40℃ to +125℃; VCC=6.0V | 9 | ||
| HIGH-level output voltage | VOH | 1.9 | V | Tamb=-40℃ to +125℃; VCC=2.0V; IO=-20uA | 9 | ||
| HIGH-level output voltage | VOH | 4.4 | V | Tamb=-40℃ to +125℃; VCC=4.5V; IO=-20uA | 9 | ||
| HIGH-level output voltage | VOH | 5.9 | V | Tamb=-40℃ to +125℃; VCC=6.0V; IO=-20uA | 9 | ||
| HIGH-level output voltage | VOH | 3.7 | V | Tamb=-40℃ to +125℃; VCC=4.5V; IO=-4.0mA | 9 | ||
| HIGH-level output voltage | VOH | 5.2 | V | Tamb=-40℃ to +125℃; VCC=6.0V; IO=-5.2mA | 9 | ||
| LOW-level output voltage | VOL | 0.1 | V | Tamb=-40℃ to +125℃; VCC=2.0V; IO=20uA | 9 | ||
| LOW-level output voltage | VOL | 0.1 | V | Tamb=-40℃ to +125℃; VCC=4.5V; IO=20uA | 9 | ||
| LOW-level output voltage | VOL | 0.1 | V | Tamb=-40℃ to +125℃; VCC=6.0V; IO=20uA | 9 | ||
| LOW-level output voltage | VOL | 0.4 | V | Tamb=-40℃ to +125℃; VCC=4.5V; IO=4.0mA | 9 | ||
| LOW-level output voltage | VOL | 0.4 | V | Tamb=-40℃ to +125℃; VCC=6.0V; IO=5.2mA | 9 | ||
| Input leakage current | II | -4 | 4 | uA | Tamb=-40℃ to +125℃; VCC=6.0V; VI=VCC or GND | 9 | |
| Supply current | ICC | 4 | uA | Tamb=-40℃ to +125℃; VCC=6.0V; VI=VCC or GND; IO=0A | 9 | ||
| Propagation delay S1, S2 to Q | tPLH, tPHL | 182 | ns | Tamb=-40℃ to +125℃; VCC=2.0V; CL=50pF | 11 | ||
| Propagation delay S1, S2 to Q | tPLH, tPHL | 36 | ns | Tamb=-40℃ to +125℃; VCC=4.5V; CL=50pF | 11 | ||
| Propagation delay S1, S2 to Q | tPLH, tPHL | 31 | ns | Tamb=-40℃ to +125℃; VCC=6.0V; CL=50pF | 11 | ||
| Propagation delay S to Q | tPLH, tPHL | 138 | ns | Tamb=-40℃ to +125℃; VCC=2.0V; CL=50pF | 11 | ||
| Propagation delay S to Q | tPLH, tPHL | 28 | ns | Tamb=-40℃ to +125℃; VCC=4.5V; CL=50pF | 11 | ||
| Propagation delay S to Q | tPLH, tPHL | 23 | ns | Tamb=-40℃ to +125℃; VCC=6.0V; CL=50pF | 11 | ||
| Propagation delay R to Q | tPLH, tPHL | 165 | ns | Tamb=-40℃ to +125℃; VCC=2.0V; CL=50pF | 11 | ||
| Propagation delay R to Q | tPLH, tPHL | 33 | ns | Tamb=-40℃ to +125℃; VCC=4.5V; CL=50pF | 11 | ||
| Propagation delay R to Q | tPLH, tPHL | 29 | ns | Tamb=-40℃ to +125℃; VCC=6.0V; CL=50pF | 11 | ||
| Transition time | tTHL, tTLH | 105 | ns | Tamb=-40℃ to +125℃; VCC=2.0V; CL=50pF | 11 | ||
| Transition time | tTHL, tTLH | 21 | ns | Tamb=-40℃ to +125℃; VCC=4.5V; CL=50pF | 11 | ||
| Transition time | tTHL, tTLH | 18 | ns | Tamb=-40℃ to +125℃; VCC=6.0V; CL=50pF | 11 |
CAD (KiCad official)
- Symbol:
SN74HC279AN - Footprint:
Package_DIP:DIP-16_W7.62mm - 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files:
sn74hc279an-etched.step/sn74hc279an-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc279an.step/sn74hc279an.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: lingxingic datasheet (17 pp, sha256
c63ce69b43c6c9e7, retrieved 2026-10-13, tier: lcsc) - 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).