component
SN74LS279ADR
Public Made by Adomby adom
lingxingic Latches, SOP-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
markdownSN74LS279ADR
lingxingic · Latches · SOP-16
SN74LS279ADR from lingxingic, in a SOP-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 | Reset data input of latch 1; per the function table, a low level here with S high drives 1Q low. |
| 2 | 1S1 | input | Set data input 1 of latch 1; a low on either 1S1 or 1S2 sets 1Q high, so both must be high for the set function to be inactive. |
| 3 | 1S2 | input | Set data input 2 of latch 1; combined with 1S1, a low on either input sets 1Q high. |
| 4 | 1Q | output | Output of latch 1; it holds its previous state when S and R are both high, goes high on set and low on reset. |
| 5 | 2R | input | Reset data input of latch 2; per the function table, a low level here with S high drives 2Q low. |
| 6 | 2S | input | Set data input of latch 2; a low level sets 2Q high. |
| 7 | 2Q | output | Output of latch 2, following the R-S function table. |
| 8 | GND | power_in | Ground reference (0 V) for the device. |
| 9 | 3Q | output | Output of latch 3, following the R-S function table. |
| 10 | 3R | input | Reset data input of latch 3; per the function table, a low level here with S high drives 3Q low. |
| 11 | 3S1 | input | Set data input 1 of latch 3; a low on either 3S1 or 3S2 sets 3Q high, so both must be high for the set function to be inactive. |
| 12 | 3S2 | input | Set data input 2 of latch 3; combined with 3S1, a low on either input sets 3Q high. |
| 13 | 4Q | output | Output of latch 4, following the R-S function table. |
| 14 | 4R | input | Reset data input of latch 4; per the function table, a low level here with S high drives 4Q low. |
| 15 | 4S | input | Set data input of latch 4; a low level sets 4Q high. |
| 16 | VCC | power_in | Supply voltage; recommended 2.0 V to 6.0 V (typ. 5.0 V), absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| Package | SOP-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 | -0.5 | 7 | V | 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 | 260 | ℃ | 10s SOP/TSSOP | 7 | ||
| supply voltage | VCC | 2 | 5 | 6 | V | 7 | |
| input voltage | VI | 0 | V | 7 | |||
| output voltage | VO | 0 | V | 7 | |||
| ambient temperature | Tamb | -40 | 125 | ℃ | 7 | ||
| HIGH-level input voltage | VIH | 1.5 | 1.2 | V | VCC=2.0V; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level input voltage | VIH | 3.15 | 2.4 | V | VCC=4.5V; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level input voltage | VIH | 4.2 | 3.2 | V | VCC=6.0V; Tamb=-40℃ to +85℃ | 8 | |
| LOW-level input voltage | VIL | 0.8 | 0.5 | V | VCC=2.0V; Tamb=-40℃ to +85℃ | 8 | |
| LOW-level input voltage | VIL | 2.1 | 1.35 | V | VCC=4.5V; Tamb=-40℃ to +85℃ | 8 | |
| LOW-level input voltage | VIL | 2.8 | 1.8 | V | VCC=6.0V; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level output voltage | VOH | 1.9 | 2 | V | VCC=2.0V; IO=-20uA; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level output voltage | VOH | 4.4 | 4.5 | V | VCC=4.5V; IO=-20uA; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level output voltage | VOH | 5.9 | 6 | V | VCC=6.0V; IO=-20uA; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level output voltage | VOH | 3.84 | 4.32 | V | VCC=4.5V; IO=-4.0mA; Tamb=-40℃ to +85℃ | 8 | |
| HIGH-level output voltage | VOH | 5.34 | 5.81 | V | VCC=6.0V; IO=-5.2mA; Tamb=-40℃ to +85℃ | 8 | |
| LOW-level output voltage | VOL | 0 | 0.1 | V | VCC=2.0V; IO=20uA; Tamb=-40℃ to +85℃ | 8 | |
| LOW-level output voltage | VOL | 0.15 | 0.33 | V | VCC=4.5V; IO=4.0mA; Tamb=-40℃ to +85℃ | 8 | |
| LOW-level output voltage | VOL | 0.16 | 0.33 | V | VCC=6.0V; IO=5.2mA; Tamb=-40℃ to +85℃ | 8 | |
| input leakage current | II | -2 | 2 | uA | VCC=6.0V; VI=VCC or GND; Tamb=-40℃ to +85℃ | 8 | |
| supply current | ICC | 2 | uA | VCC=6.0V; VI=VCC or GND; IO=0A; Tamb=-40℃ to +85℃ | 8 | ||
| HIGH-level input voltage | VIH | 1.5 | V | VCC=2.0V; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level input voltage | VIH | 3.15 | V | VCC=4.5V; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level input voltage | VIH | 4.2 | V | VCC=6.0V; Tamb=-40℃ to +125℃ | 9 | ||
| LOW-level input voltage | VIL | 0.5 | V | VCC=2.0V; Tamb=-40℃ to +125℃ | 9 | ||
| LOW-level input voltage | VIL | 1.35 | V | VCC=4.5V; Tamb=-40℃ to +125℃ | 9 | ||
| LOW-level input voltage | VIL | 1.8 | V | VCC=6.0V; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level output voltage | VOH | 1.9 | V | VCC=2.0V; IO=-20uA; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level output voltage | VOH | 4.4 | V | VCC=4.5V; IO=-20uA; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level output voltage | VOH | 5.9 | V | VCC=6.0V; IO=-20uA; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level output voltage | VOH | 3.7 | V | VCC=4.5V; IO=-4.0mA; Tamb=-40℃ to +125℃ | 9 | ||
| HIGH-level output voltage | VOH | 5.2 | V | VCC=6.0V; IO=-5.2mA; Tamb=-40℃ to +125℃ | 9 | ||
| LOW-level output voltage | VOL | 0.1 | V | VCC=2.0V; IO=20uA; Tamb=-40℃ to +125℃ | 9 | ||
| LOW-level output voltage | VOL | 0.4 | V | VCC=4.5V; IO=4.0mA; Tamb=-40℃ to +125℃ | 9 | ||
| input leakage current | II | -4 | 4 | uA | VCC=6.0V; VI=VCC or GND; Tamb=-40℃ to +125℃ | 9 | |
| supply current | ICC | 4 | uA | VCC=6.0V; VI=VCC or GND; IO=0A; Tamb=-40℃ to +125℃ | 9 | ||
| propagation delay, S1, S2 to Q | tPLH, tPHL | 182 | ns | VCC=2.0V; CL=50pF; see Figure 4; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, S1, S2 to Q | tPLH, tPHL | 36 | ns | VCC=4.5V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, S1, S2 to Q | tPLH, tPHL | 31 | ns | VCC=6.0V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, S to Q | tPLH, tPHL | 138 | ns | VCC=2.0V; CL=50pF; see Figure 4; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, S to Q | tPLH, tPHL | 28 | ns | VCC=4.5V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, S to Q | tPLH, tPHL | 23 | ns | VCC=6.0V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, R to Q | tPLH, tPHL | 165 | ns | VCC=2.0V; CL=50pF; see Figure 4; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, R to Q | tPLH, tPHL | 33 | ns | VCC=4.5V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| propagation delay, R to Q | tPLH, tPHL | 29 | ns | VCC=6.0V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| transition time | tTHL, tTLH | 105 | ns | VCC=2.0V; CL=50pF; see Figure 4; Tamb=-40℃ to +125℃ | 11 | ||
| transition time | tTHL, tTLH | 21 | ns | VCC=4.5V; CL=50pF; Tamb=-40℃ to +125℃ | 11 | ||
| transition time | tTHL, tTLH | 18 | ns | VCC=6.0V; CL=50pF; Tamb=-40℃ to +125℃ | 11 |
CAD (KiCad official)
- Symbol:
SN74LS279ADR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
sn74ls279adr-etched.step/sn74ls279adr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ls279adr.step/sn74ls279adr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: lingxingic datasheet (17 pp, sha256
504e78937b9aca6f, retrieved 2026-10-19, 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).