参数资料
| 型号： | 74LCX540WMX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 13/14页 |
| 文件大小： | 0K |
| 描述： | IC INVERTER 8-INPUT 20SOIC |
| 标准包装： | 1,000 |
| 系列： | 74LCX |
| 逻辑类型： | 逆变器，缓冲器 |
| 电路数： | 1 |
| 输入数： | 8 |
| 特点： | 三态 |
| 电源电压： | 2 V ~ 3.6 V |
| 电流 - 静态（最大值）： | 10µA |
| 输出电流高，低： | 24mA，24mA |
| 逻辑电平 - 低： | 0.7 V ~ 0.8 V |
| 逻辑电平 - 高： | 1.7 V ~ 2 V |
| 额定电压和最大 CL 时的最大传播延迟： | 6.5ns @ 3.3V，50pF |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 20-SOIC |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 包装： | 带卷 (TR) |
8
Commercial Temperature Range
IDT72V8981 3.3V Time Slot Interchange
Digital Switch 128 x 128
F0i
Bit Cells
5702 drw09
Channel 31
Bit 0
Channel 0
Bit 7
C4i
Figure 5. Frame Alignment
tFPH
tCH
tFPS
F0i
C4i
5702 drw10
tCL
tCHL
tCTT
tCLK
tFPS
tFPH
tFPW
(
)
(
)
tCTT
Figure 6. Clock Timing
NOTE:
1. Timing is over recommended temperature and power supply voltages.
2. Typical figures are at 25
°C and are for design aid only; not guaranteed and not subject to production testing.
3. Contents of Connection Memory are not lost if the clock stops, however, TX output go into the high impedance state.
Symbol
Characteristics
Min.
Typ.(2)
Max.
Unit
tCLK
Clock Period(3)
244
ns
tCH
Clock Width High
122
ns
tCL
Clock Width Low
110
122
150
ns
tCTT
Clock Transition Time
20
ns
tFPS
Frame Pulse Setup Time
5
20
190
ns
tFPH
Frame Pulse Hold Time
5
20
190
ns
tFPW
Frame Pulse Width
244
ns
AC ELECTRICAL CHARACTERISTICS (1)
CLOCK TIMING
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| 74LCX541 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS |
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