点击这里下载74HC595 中文数据手册（datasheet)(pdf格式）
概述：
74HC595 是一款漏极开路输出的CMOS 移位寄存器，输出端口为可控的三态输出 端，亦能串行输出控制下一级级联芯片。
特点：
高速移位时钟频率Fmax>25MHz
标准串行（SPI）接口
CMOS 串行输出，可用于多个设备的级联
低功耗：TA =25℃时，Icc=4μA（MAX）
引脚功能表：
|
管脚编号 |
管脚名 | 管脚定义功能 |
|
1、2、3、4、5、6、7、15 |
QA—QH | 三态输出管脚 |
|
8 |
GND | 电源地 |
|
9 |
SQH | 串行数据输出管脚 |
|
10 |
SCLR | 移位寄存器清零端 |
|
11 |
SCK | 数据输入时钟线 |
|
12 |
RCK | 输出存储器锁存时钟线 |
|
13 |
OE | 输出使能 |
|
14 |
SI | 数据线 |
|
15 |
VCC | 电源端 |
图1 74HC595引脚图
图2 74HC595逻辑图
真值表：
| 输入管脚 | 输出管脚 | ||||
| SI | SCK | SCLR | RCK | OE | |
| X | X | X | X | H | QA—QH 输出高阻 |
| X | X | X | X | L | QA—QH 输出有效值 |
| X | X | L | X | X | 移位寄存器清零 |
| L | 上沿 | H | X | X | 移位寄存器存储L |
| H | 上沿 | H | X | X | 移位寄存器存储H |
| X | 下沿 | H | X | X | 移位寄存器状态保持 |
| X | X | X | 上沿 | X | 输出存储器锁存移位寄存器中的状态值 |
| X | X | X | 下沿 | X | 输出存储器状态保持 |
Absolute Maximum Ratings绝对最大额定值
| 参数 | 数值 |
| Supply Voltage电源电压(VCC) | −0.5 to +7.0V |
| DC Input Voltage 直流输入电压(VIN) | −1.5 to VCC +1.5V |
| DC Output Voltage 直流输出电压(VOUT) | −0.5 to VCC +0.5V |
| Clamp Diode Current 钳位二极管电流(IIK, IOK) | ±20mA |
| DC Output Current直流输出电流，每个引脚（输出） | ±35mA |
| DC VCC or GND Current,per pin (ICC) | ±70mA |
| Storage Temperature Range 储存温度范围(TSTG) | −65℃ to +150℃ |
| Power Dissipation 功耗(PD) | |
| (Note 3) | 600mW |
| S.O. Package only | 500mW |
| Lead Temperature (TL) (Soldering 10 seconds) | 260℃ |
Recommended Operating Conditions建议操作条件
| 参数 | 最小 | 最大 | 单位 |
| Supply Voltage电源电压(VCC) | 2 | 6 | v |
| DC Input or Output Voltage(VIN, VOUT)输入输出电压 | 0 | VCC | V |
| Operating Temperature Range工作温度范围 (TA) | −40 | +85 | ℃ |
| Input Rise or Fall Times 输入上升或下降时间 | |||
| (tr,tf) VCC = 2.0V | - | 1000 | ns |
| VCC = 4.5V | - | 500 | ns |
| VCC = 6.0V | - | 400 | ns |
DC SPECIFICATIONS直流电气规格
| Symbol 符号 | Parameter 参数 | Conditions 条件 | VCC | TA=25℃ | TA= −40to85℃ | TA= −55to125℃ | UNIT 单位 | |
| 典型 | Guaranteed Limits保证界限 | |||||||
| VIH | Minimum High Level Input Voltage最大高电平输入电压 | - | 2.0V | - | 1.5 | 1.5 | 1.5 | V |
| 4.5V | - | 3.15 | 3.15 | 3.15 | ||||
| 6.0V | - | 4.2 | 4.2 | 4.2 | ||||
| VIL | Maximum LOW Level Input Voltage最大低电平输入电压 | - | 2.0V | - | 0.5 | 0.5 | 0.5 | V |
| 4.5V | - | 1.35 | 1.35 | 1.35 | ||||
| 6.0V | - | 1.8 | 1.8 | 1.8 | ||||
| VOH | Minimum HIGH Level Output Voltage最大高电平输出电压 | VIN=VIH or VIL|IOUT|≤20μA | 2.0V | 2.0 | 1.9 | 1.9 | 1.9 | V |
| 4.5V | 4.5 | 4.4 | 4.4 | 4.4 | ||||
| 6.0V | 6.0 | 5.9 | 5.9 | 5.9 | ||||
| Q'H | VIN = VIH or VIL | V | ||||||
| |IOUT| ≤4.0mA | 4.5V | 4.2 | 3.98 | 3.84 | 3.7 | |||
| |IOUT| ≤5.2mA | 6.0V | 5.2 | 5.48 | 5.34 | 5.2 | |||
| QA thru QH | VIN = VIH or VIL | V | ||||||
| |IOUT| ≤6.0mA | 4.5V | 4.2 | 3.98 | 3.84 | 3.7 | |||
| IOUT| ≤ 7.8mA | 6.0V | 5.7 | 5.48 | 5.34 | 5.2 | |||
| VOL | Maximum LOW Level Output Voltage最大低电平输出电压 | VIN=VIH or VIL|IOUT| ≤ 20μA | 2.0V | 0 | 0.1 | 0.1 | 0.1 | V |
| 4.5V | 0 | 0.1 | 0.1 | 0.1 | ||||
| 6.0V | 0 | 0.1 | 0.1 | 0.1 | ||||
| Q'H | VIN = VIH or VIL | V | ||||||
| |IOUT| ≤ 4mA | 4.5V | 0.2 | 0.26 | 0.33 | 0.4 | |||
| |IOUT| ≤5.2mA | 6.0V | 0.2 | 0.26 | 0.33 | 0.4 | |||
| QA thru QH | VIN = VIH or VIL | V | ||||||
| |IOUT| ≤6.0mA | 4.5V | 0.2 | 0.26 | 0.33 | 0.4 | |||
| |IOUT| ≤7.8mA | 6.0V | 0.2 | 0.26 | 0.33 | 0.4 | |||
| IIN | Maximum Input Current最大输入电流 | VIN=VCC or GND | 6.0V | - | ±0.1 | ±1.0 | ±1.0 | μA |
| IOZ | Maximum 3-STATE Output Leakage最大3态输出泄漏电流 | VOUT = VCC or GND G = VIH | 6.0V | - | ±0.5 | ±5.0 | ±10 | μA |
| ICC | Maximum Quiescent Supply Current电源电流 | VIN=VCC or GND IOUT = 0μA | 6.0V | - | 8.0 | 80 | 160 | μA |
交流电气特性：
| Symbol 符号 | Parameter 参数 | Conditions 条件 | 典型 | Guaranteed Limit | UNIT 单位 |
| fMax | 最高工作频率 | - | 50 | 30 | MHz |
| tPHL, tPLH | Maximum Propagation Delay,最大传输延迟 SCK to Q’ H | CL = 45 pF | 12 | 20 | ns |
| tPHL, tPLH | Maximum Propagation Delay, 最大传输延迟RCK to QA thru QH | CL = 45 pF | 18 | 30 | ns |
| tPZH, tPZL | Maximum Output Enable Time from G to QA thru QH 最大输出启用时间G to QA thru QH | RL=1kΩ CL=45pF | 17 | 28 | ns |
| tPHZ, tPLZ | Maximum Output Disable Time from G to QA thru QH最大输出禁用时间G to QA thru QH | RL=1kΩ CL=5pF | 15 | 25 | ns |
| tS | Minimum Setup Time from SER to SCK | - | - | 20 | ns |
| tS | Minimum Setup Time from SCLR to SCK | - | - | 20 | ns |
| tS | Minimum Setup Time from SCK to RCK | - | - | 40 | ns |
| tH | Minimum Hold Time from SER to SCK | - | - | 0 | ns |
| tW | Minimum Pulse Width of SCK or RCK | - | - | 16 | ns |
交流电气特性：（续）
| Symbol 符号 | Parameter 参数 | Conditions 条件 | VCC | TA = 25℃ | TA = −40 to 85℃ | TA = −55 to 125℃ | UNIT 单位 | |
| 典型 | Guaranteed Limits 保证界限 | |||||||
| fMax | Maximum Operating Frequency最高工作频率 | CL = 50 pF | 2.0V | 10 | 6 | 4.8 | 4.0 | MHz |
| 4.5V | 45 | 30 | 24 | 20 | ||||
| 6.0V | 50 | 35 | 28 | 24 | ||||
| tPHL, tPLH | Maximum Propagation Delay from SCK to Q’ H最大传输延迟传播延迟CK to Q | CL = 50 pF | 2.0V | 58 | 210 | 265 | 315 | ns |
| CL = 150 pF | 2.0V | 83 | 294 | 367 | 441 | |||
| CL = 50 pF | 4.5V | 14 | 42 | 53 | 63 | |||
| CL = 150 pF | 4.5V | 17 | 58 | 74 | 88 | |||
| CL = 50 pF | 6.0V | 10 | 36 | 45 | 54 | |||
| CL = 150 pF | 6.0V | 14 | 50 | 63 | 76 | |||
| tPHL, tPLH | Maximum Propagation Delay from RCK to QA thru QHCK to QCK to Q最大传输延迟RCK to QA thru QHCK to QCK to Q | CL = 50 pF | 2.0V | 70 | 175 | 220 | 265 | ns |
| CL = 150 pF | 2.0V | 105 | 245 | 306 | 368 | |||
| CL = 50 pF | 4.5V | 21 | 35 | 44 | 53 | |||
| CL = 150 pF | 4.5V | 28 | 49 | 61 | 74 | |||
| CL = 50 pF | 6.0V | 18 | 30 | 37 | 45 | |||
| CL = 150 pF | 6.0V | 26 | 42 | 53 | 63 | |||
| tPHL, tPLH | Maximum Propagation Delay from SCLR to Q’ H最大传输延迟to Q’ H | - | 2.0V | - | 175 | 221 | 261 | ns |
| 4.5V | - | 35 | 44 | 52 | ||||
| 6.0V | - | 30 | 37 | 44 | ||||
| tPZH, tPZL | Maximum Output Enable from G to QA thru QH最大输出启用 | RL=1kΩ CL=50pF | 2.0V | 75 | 175 | 220 | 265 | ns |
| RL=1kΩ CL=150pF | 2.0V | 100 | 245 | 306 | 368 | |||
| CL= 50pF | 4.5V | 15 | 35 | 44 | 53 | |||
| CL = 150pF | 4.5V | 20 | 49 | 61 | 74 | |||
| CL = 50 pF | 6.0V | 13 | 30 | 37 | 45 | |||
| CL = 150 pF | 6.0V | 17 | 42 | 53 | 63 | |||
| CPD | Power Dissipation Capacitance, OutputsEnabled (Note 6)功耗电容 | G = VCC | - | 90 | - | - | - | pF |
| G = GND | 150 | - | - | - | ||||
| CIN | Maximum Input Capacitance最大输入电容 | - | - | 5 | 10 | 10 | 10 | pF |
| COUT | Maximum Output最大输出电容 | - | - | 15 | 20 | 20 | 20 | pF |
图3 74HC595 时序图图
