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SN74HC574D
Public Made by Adomby adom
lingxingic Flip Flops, SOP-20-300mil. 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
markdownSN74HC574D
lingxingic · Flip Flops · SOP-20-300mil
SN74HC574D from lingxingic, in a SOP-20-300mil. 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 | OE | input | Active-low 3-state output enable; when OE is high the Qn outputs go high-impedance, and changes on OE do not affect the flip-flop state. |
| 2 | D0 | input | Data input to flip-flop FF1, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 3 | D1 | input | Data input to flip-flop FF2, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 4 | D2 | input | Data input to flip-flop FF3, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 5 | D3 | input | Data input to flip-flop FF4, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 6 | D4 | input | Data input to flip-flop FF5, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 7 | D5 | input | Data input to flip-flop FF6, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 8 | D6 | input | Data input to flip-flop FF7, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 9 | D7 | input | Data input to flip-flop FF8, sampled on the rising edge of CP with the setup and hold times given in the timing tables. |
| 10 | GND | power_in | Ground reference (0 V). |
| 11 | CP | input | Clock input; the flip-flops are triggered on the rising edge. |
| 12 | Q7 | tri_state | 3-state flip-flop output Q7; high-impedance when OE is high. |
| 13 | Q6 | tri_state | 3-state flip-flop output Q6; high-impedance when OE is high. |
| 14 | Q5 | tri_state | 3-state flip-flop output Q5; high-impedance when OE is high. |
| 15 | Q4 | tri_state | 3-state flip-flop output Q4; high-impedance when OE is high. |
| 16 | Q3 | tri_state | 3-state flip-flop output Q3; high-impedance when OE is high. |
| 17 | Q2 | tri_state | 3-state flip-flop output Q2; high-impedance when OE is high. |
| 18 | Q1 | tri_state | 3-state flip-flop output Q1; high-impedance when OE is high. |
| 19 | Q0 | tri_state | 3-state flip-flop output Q0; high-impedance when OE is high. |
| 20 | VCC | power_in | Supply voltage; recommended 2.0-6.0 V for SN74HC574 and 4.5-5.5 V for SN74HCT574, with absolute maximum 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| Package | SOP-20-300mil |
| 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 |
|---|---|---|---|---|---|---|---|
| 电源电压 | VCC | -0.5 | 7 | V | 6 | ||
| 输入钳位电流 | IIK | -20 | 20 | mA | VI<-0.5V或VI>VCC+0.5V | 6 | |
| 输出钳位电流 | IOK | -20 | 20 | mA | VO<-0.5V或VO>VCC+0.5V | 6 | |
| 输出电流 | IO | -35 | 35 | mA | -0.5V<VO<VCC+0.5V | 6 | |
| 电源电流 | ICC | 70 | mA | 6 | |||
| 地电流 | IGND | -70 | mA | 6 | |||
| 贮存温度 | Tstg | -65 | 150 | ℃ | 6 | ||
| 总功耗 | Ptot | 500 | mW | 6 | |||
| 焊接温度 | TL | 260 | ℃ | 10 s, SOP/TSSOP/SOP(M) | 6 | ||
| 电源电压 | VCC | 2 | 5 | 6 | V | SN74HC574 | 7 |
| 输入电压 | VI | 0 | V | SN74HC574; max printed as VCC | 7 | ||
| 输出电压 | VO | 0 | V | SN74HC574; max printed as VCC | 7 | ||
| 工作环境温度 | Tamb | -40 | 125 | ℃ | SN74HC574 | 7 | |
| 高电平输入电压 | VIH | 1.5 | 1.2 | V | Tamb=25℃; VCC=2.0V | 7 | |
| 高电平输入电压 | VIH | 3.15 | 2.4 | V | Tamb=25℃; VCC=4.5V | 7 | |
| 高电平输入电压 | VIH | 4.2 | 3.2 | V | Tamb=25℃; VCC=6.0V | 7 | |
| 低电平输入电压 | VIL | 0.8 | 0.5 | V | Tamb=25℃; VCC=2.0V | 7 | |
| 低电平输入电压 | VIL | 2.1 | 1.35 | V | Tamb=25℃; VCC=4.5V | 7 | |
| 低电平输入电压 | VIL | 2.8 | 1.8 | V | Tamb=25℃; VCC=6.0V | 7 | |
| 高电平输出电压 | VOH | 1.9 | 2 | V | Tamb=25℃; VI=VIH或VIL; IO=-20uA; VCC=2.0V | 7 | |
| 高电平输出电压 | VOH | 4.4 | 4.5 | V | Tamb=25℃; VI=VIH或VIL; IO=-20uA; VCC=4.5V | 7 | |
| 高电平输出电压 | VOH | 5.9 | 6 | V | Tamb=25℃; VI=VIH或VIL; IO=-20uA; VCC=6.0V | 7 | |
| 高电平输出电压 | VOH | 3.98 | 4.32 | V | Tamb=25℃; VI=VIH或VIL; IO=-6.0mA; VCC=4.5V | 7 | |
| 高电平输出电压 | VOH | 5.48 | 5.81 | V | Tamb=25℃; VI=VIH或VIL; IO=-7.8mA; VCC=6.0V | 7 | |
| 低电平输出电压 | VOL | 0 | 0.1 | V | Tamb=25℃; VI=VIH或VIL; IO=20uA; VCC=2.0V | 7 | |
| 低电平输出电压 | VOL | 0.15 | 0.26 | V | Tamb=25℃; VI=VIH或VIL; IO=6.0mA; VCC=4.5V | 7 | |
| 低电平输出电压 | VOL | 0.16 | 0.26 | V | Tamb=25℃; VI=VIH或VIL; IO=7.8mA; VCC=6.0V | 7 | |
| 输入漏电流 | II | -1 | 1 | uA | Tamb=25℃; VI=VCC或GND; VCC=6.0V | 7 | |
| 截止状态输出电流 | IOZ | -1 | 1 | uA | Tamb=25℃; VI=VIH或VIL; VCC=6.0V; VO=VCC或GND | 7 | |
| 静态电流 | ICC | 8 | uA | Tamb=25℃; VI=VCC或GND; IO=0A; VCC=6.0V | 7 | ||
| 高电平输入电压 | VIH | 3.15 | V | Tamb=-40℃～+125℃; VCC=4.5V | 9 | ||
| 高电平输入电压 | VIH | 4.2 | V | Tamb=-40℃～+125℃; VCC=6.0V | 9 | ||
| 低电平输入电压 | VIL | 1.35 | V | Tamb=-40℃～+125℃; VCC=4.5V | 9 | ||
| 低电平输入电压 | VIL | 1.8 | V | Tamb=-40℃～+125℃; VCC=6.0V | 9 | ||
| 高电平输出电压 | VOH | 4.4 | V | Tamb=-40℃～+125℃; VI=VIH或VIL; IO=-20uA; VCC=4.5V | 9 | ||
| 高电平输出电压 | VOH | 3.7 | V | Tamb=-40℃～+125℃; VI=VIH或VIL; IO=-6.0mA; VCC=4.5V | 9 | ||
| 高电平输出电压 | VOH | 5.2 | V | Tamb=-40℃～+125℃; VI=VIH或VIL; IO=-7.8mA; VCC=6.0V | 9 | ||
| 低电平输出电压 | VOL | 0.4 | V | Tamb=-40℃～+125℃; VI=VIH或VIL; IO=6.0mA; VCC=4.5V | 9 | ||
| 输入漏电流 | II | -4 | 4 | uA | Tamb=-40℃～+125℃; VI=VCC或GND; VCC=6.0V | 9 | |
| 截止状态输出电流 | IOZ | -4 | 4 | uA | Tamb=-40℃～+125℃; VI=VIH或VIL; VCC=6.0V; VO=VCC或GND | 9 | |
| 静态电流 | ICC | 160 | uA | Tamb=-40℃～+125℃; VI=VCC或GND; IO=0A; VCC=6.0V | 9 | ||
| CP到Qn的传输延时 | tPLH，tPHL | 17 | 30 | ns | Tamb=25℃; CL=50pF; VCC=4.5V | 10 | |
| OE到Qn的使能时间 | tPZH，tPZL | 16 | 28 | ns | Tamb=25℃; CL=50pF; VCC=4.5V | 10 | |
| OE到Qn的失能时间 | tPLZ，tPHZ | 14 | 25 | ns | Tamb=25℃; CL=50pF; VCC=4.5V | 10 | |
| 转换时间 | tTHL，tTLH | 5 | 12 | ns | Tamb=25℃; CL=50pF; Qn输出; VCC=4.5V | 10 | |
| 脉冲宽度 | tW | 16 | 5 | ns | Tamb=25℃; CP高电平或低电平; VCC=4.5V | 10 | |
| Dn到CP的建立时间 | tsu | 12 | 2 | ns | Tamb=25℃; CL=50pF; VCC=4.5V | 10 | |
| Dn到CP的保持时间 | th | 5 | 0 | ns | Tamb=25℃; CL=50pF; VCC=4.5V | 10 | |
| 最大频率 | fmax | 30 | MHz | Tamb=25℃; CP输入; VCC=4.5V | 10 | ||
| CP到Qn的传输延时 | tPLH，tPHL | 45 | ns | Tamb=-40℃～+125℃; CL=50pF; VCC=4.5V | 12 | ||
| OE到Qn的使能时间 | tPZH，tPZL | 42 | ns | Tamb=-40℃～+125℃; CL=50pF; VCC=4.5V | 12 | ||
| OE到Qn的失能时间 | tPLZ，tPHZ | 38 | ns | Tamb=-40℃～+125℃; CL=50pF; VCC=4.5V | 12 | ||
| 转换时间 | tTHL，tTLH | 18 | ns | Tamb=-40℃～+125℃; CL=50pF; Qn输出; VCC=4.5V | 12 | ||
| 脉冲宽度 | tW | 24 | ns | Tamb=-40℃～+125℃; CL=50pF; CP高电平或低电平; VCC=4.5V | 12 | ||
| Dn到CP的建立时间 | tsu | 18 | ns | Tamb=-40℃～+125℃; CL=50pF; VCC=4.5V | 12 | ||
| Dn到CP的保持时间 | th | 5 | ns | Tamb=-40℃～+125℃; CL=50pF; VCC=4.5V | 12 | ||
| 最大频率 | fmax | 20 | MHz | Tamb=-40℃～+125℃; CP输入; VCC=4.5V | 12 |
CAD (KiCad official)
- Symbol:
SN74HC574D - Footprint:
Package_SO:SOP-20_7.5x12.8mm_P1.27mm - 3D model: SOP-20-300mil, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 2.65 mm nominal SOIC height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
sn74hc574d-etched.step/sn74hc574d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc574d.step/sn74hc574d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: lingxingic datasheet (20 pp, sha256
4513b7374c86e098, retrieved 2026-10-17, 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: 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).