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SN74HC279AN

Public Made by Adom

by adom

lingxingic Latches, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74HC279AN

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc279an.step / sn74hc279an.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF