参数资料
| 型号： | 74LCX540WMX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 14/14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) |
9
Commercial Temperature Range
IDT72V8981 3.3V Time Slot Interchange
Digital Switch 128 x 128
tTAA
C4i
TX0-3
Bit Cell Boundary
5702 drw11
TX0-3
tTOH
tTAZ
tTZA
tTOH
tOED
ODE
TX0-3
5702 drw12
tOED
C4i
RX0-3
5702 drw13
Bit Cell Boundaries
tSIS
tSIH
Figure 7. Serial Outputs and External Control
Figure 8. Output Driver Enable
Figure 9. Serial Inputs
Symbol
Characteristics
Min.
Typ.(2)
Max.
Unit
Test Conditions
tTAZ
TX0-3 Delay - Active to High Z
30
45
ns
R
L = 1K
(3), C
L = 150pF
tTZA
TX0-3 Delay - High Z to Active
45
60
ns
C
L = 150pF
tTAA
TX0-3 Delay - Active to Active
40
60
ns
C
L = 150pF
tTOH
TX0-3 Hold Time
20
45
ns
C
L = 150pF
tOED
Output Driver Enable Delay
45
60
ns
R
L = 1K
(3), C
L = 150pF
tSIS
Serial Input Setup Time
10
20
ns
tSIH
Serial Input Hold Time
10
20
ns
tZDO
High Z to Valid Data
32
cycles
C4i cycles
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. High Impedance is measured by pulling to the appropriate rail with R
L, with timing corrected to cancel time taken to discharge CL.
AC ELECTRICAL CHARACTERISTICS (1)
SERIAL STREAM TIMING
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