74hc595中文资料

1、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进行级联芯片。特点： 高速移位时钟频率Fmax25MHz 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=4A（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 QAQH 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 SCKSCLRRCKOEX X X X H QAQH 输出高阻 X X X X L QAQH 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

2、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 +7.0VDC Input Voltage 直流输入电压(VIN)1.5 to VCC +1.5VDC Output Voltage 直流输出电压(VOUT)0.5 to VCC +0.5VClamp Diode Current 钳位二极管电流(IIK, IOK)20mADC Output Current直流输出电流，每个引脚（输出）35mADC VCC or GND Current,per pin (ICC)70mAStorage Temperature Range 储存温度范围(TSTG)65 to +150Power Dissipation 功耗(PD)(Note 3)600mWS.O. Package only500mWLead Temperature (TL) (Soldering 10 seconds)260Recommended Operating Conditions建议操作条件 参数最

3、小最大单位Supply Voltage电源电压(VCC)26vDC Input or Output Voltage(VIN, VOUT)输入输出电压0VCCVOperating Temperature Range工作温度范围 (TA)40+85Input Rise or Fall Times 输入上升或下降时间(tr,tf) VCC = 2.0V-1000nsVCC = 4.5V-500nsVCC = 6.0V-400nsDC SPECIFICATIONS直流电气规格 Symbol 符号Parameter 参数Conditions 条件VCCTA=25TA= 40to85TA= 55to125UNIT 单位典型Guaranteed Limits保证界限VIHMinimum High Level Input Voltage最大高电平输入电压-2.0V-1.51.51.5V4.5V-3.153.153.156.0V-4.24.24.2VILMaximum LOW Level Input Voltage最大低电平输入电压-2.0V-0.50.50.5V4.5V-1.351.351.356.0

4、V-1.81.81.8VOHMinimum HIGH Level Output Voltage最大高电平输出电压VIN=VIH or VIL|IOUT|20A2.0V2.01.91.91.9V4.5V4.54.44.44.46.0V6.05.95.95.9QHVIN = VIH or VILV|IOUT| 4.0mA 4.5V 4.2 3.98 3.84 3.7 |IOUT| 5.2mA6.0V5.25.485.345.2QA thru QHVIN = VIH or VILV|IOUT| 6.0mA4.5V 4.2 3.98 3.84 3.7 IOUT| 7.8mA6.0V5.75.485.345.2VOLMaximum LOW Level Output Voltage最大低电平输出电压VIN=VIH or VIL|IOUT| 20A2.0V00.10.10.1V4.5V00.10.10.16.0V00.10.10.1QHVIN = VIH or VIL V|IOUT| 4mA 4.5V 0.2 0.26 0.33 0.4|IOUT| 5.2mA6.0V0.20.260.330.4QA

5、 thru QHVIN = VIH or VIL V|IOUT| 6.0mA 4.5V 0.20.26 0.33 0.4 |IOUT| 7.8mA6.0V0.20.260.330.4IINMaximum Input Current最大输入电流VIN=VCC or GND6.0V-0.11.01.0AIOZMaximum 3-STATE Output Leakage最大3态输出泄漏电流VOUT = VCC or GND G = VIH6.0V-0.55.010AICCMaximum Quiescent Supply Current电源电流VIN=VCC or GND IOUT = 0A6.0V-8.080160A交流电气特性： Symbol 符号Parameter 参数Conditions 条件典型Guaranteed LimitUNIT 单位fMax最高工作频率-5030MHztPHL, tPLHMaximum Propagation Delay,最大传输延迟 SCK to Q HCL = 45 pF1220nstPHL, tPLHMaximum Propagation Delay,

6、最大传输延迟RCK to QA thru QHCL = 45 pF1830nstPZH, tPZLMaximum Output Enable Time from G to QA thru QH 最大输出启用时间G to QA thru QHRL=1k CL=45pF1728nstPHZ, tPLZMaximum Output Disable Time from G to QA thru QH最大输出禁用时间G to QA thru QHRL=1k CL=5pF1525nstSMinimum Setup Time from SER to SCK-20nstSMinimum Setup Time from SCLR to SCK-20nstSMinimum Setup Time from SCK to RCK-40nstHMinimum Hold Time from SER to SCK-0nstWMinimum Pulse Width of SCK or RCK-16ns交流电气特性：（续） Symbol 符号Parameter 参数Conditions 条件VCCTA = 25TA =

7、 40 to 85TA = 55 to 125UNIT 单位典型Guaranteed Limits 保证界限fMaxMaximum Operating Frequency最高工作频率CL = 50 pF2.0V1064.84.0MHz4.5V453024206.0V50352824tPHL, tPLHMaximum Propagation Delay from SCK to Q H最大传输延迟传播延迟CK to QCL = 50 pF 2.0V 58 210 265 315 nsCL = 150 pF2.0V83294367441CL = 50 pF 4.5V 14 42 53 63 CL = 150 pF4.5V17587488CL = 50 pF6.0V 10 36 45 54 CL = 150 pF6.0V14506376tPHL, tPLHMaximum 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 QCL = 50 pF 2.0V 70 175 220 265 nsCL = 150 pF2.0V105245306368CL = 50 pF 4.5V 21 3544 53 CL = 150 pF4.5V28496174CL = 50 pF 6.0V 18 30 37 45 CL = 150 pF6.0V26425363tPHL, tPLHMaximum Propagation Delay from SCLR to Q H最大传输延迟to Q H-2.0V-175221261ns4.5V-3544526.0V-303744tPZH, tPZLMaximum Output Enable from G to QA thru QH最大输出启用RL=1k CL=50pF 2.0V 75 175 220

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