tTAA C4i " />
參數(shù)資料
型號: 74LCX240MSA
廠商: Fairchild Semiconductor
文件頁數(shù): 12/12頁
文件大?。?/td> 0K
描述: IC INVERTER DUAL 4-INPUT 20SSOP
標準包裝: 66
系列: 74LCX
邏輯類型: 逆變器,緩沖器
電路數(shù): 2
輸入數(shù): 4
特點: 三態(tài)
電源電壓: 2 V ~ 3.6 V
電流 - 靜態(tài)(最大值): 10µA
輸出電流高,低: 24mA,24mA
邏輯電平 - 低: 0.7 V ~ 0.8 V
邏輯電平 - 高: 1.7 V ~ 2 V
額定電壓和最大 CL 時的最大傳播延遲: 6.5ns @ 3.3V,50pF
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
供應商設備封裝: 20-SSOP
封裝/外殼: 20-SSOP(0.209",5.30mm 寬)
包裝: 管件
9
Commercial Temperature Range
IDT72V8980 3.3V Time Slot Interchange
Digital Switch 256 x 256
tTAA
C4i
TX0-7
Bit Cell Boundary
5705 drw11
CCO
tTOH
tTAZ
tTZA
tXCD
tXCH
tTOH
TX0-7
tOED
ODE
TX0-7
5705 drw12
tOED
C4i
RX0-7
5705 drw13
Bit Cell Boundaries
tSIS
tSIH
Figure 7. Serial Outputs and External Control
Figure 8. Output Driver Enable
RS
TX
5705 drw14
tZDO
tZRS
tRSZ
tRPW
Figure 10. Reset
Figure 9. Serial Inputs
Symbol
Characteristics
Min.
Typ.(2)
Max.
Unit
Test Conditions
tTAZ
TX0-7 Delay - Active to High Z
30
45
ns
RL = 1K
(3), CL = 150pF
tTZA
TX0-7 Delay - High Z to Active
45
60
ns
CL = 150pF
tTAA
TX0-7 Delay - Active to Active
40
60
ns
CL = 150pF
tTOH
TX0-7 Hold Time
20
45
ns
CL = 150pF
tOED
Output Driver Enable Delay
45
60
ns
RL = 1K
(3), CL = 150pF
tXCH
External Control Hold Time
5
50
ns
CL = 150pF
tXCD
External Control Delay
15
30
ns
CL = 150pF
tSIS
Serial Input Setup Time
10
20
ns
tSIH
Serial Input Hold Time
10
20
ns
tRSZ
Reset to High Z
5
30
ns
tZRS
High Z to Reset
0
ns
tZDO
High Z to Valid Data
32
cycles
C4i cycles
tRPW
Reset Pulse Width
100
ns
RL = 1K
(3), CL = 150pF
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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