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参数资料
| 型号： | 74VHC240SJX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 5/9页 |
| 文件大小： | 0K |
| 描述： | IC INVERTER DUAL 4-INPUT 20SOP |
| 标准包装： | 2,000 |
| 系列： | 74VHC |
| 逻辑类型： | 逆变器，缓冲器 |
| 电路数： | 2 |
| 输入数： | 4 |
| 特点： | 三态 |
| 电源电压： | 2 V ~ 5.5 V |
| 电流 - 静态（最大值）： | 4µA |
| 输出电流高，低： | 8mA，8mA |
| 逻辑电平 - 低： | 0.5V |
| 逻辑电平 - 高： | 1.5V |
| 额定电压和最大 CL 时的最大传播延迟： | 7.5ns @ 5V，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-SOP |
| 封装/外壳： | 20-SOIC（0.209"，5.30mm 宽） |
| 包装： | 带卷 (TR) |
74VHC240
Octal
Buff
er/Line
Driver
with
3-ST
A
TE
Outputs
1992 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHC240 Rev. 1.3
5
AC Electrical Characteristics
Notes:
3. Parameter guaranteed by design. tOSLH = |tPLHmax – tPLHmin|; tOSHL = |tPHLmax – tPHLmin|
4. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load. Average operating current can be obtained by the equation:
ICC (opr.) = CPD VCC fIN + ICC / 8 (per bit).
Symbol
Parameter
VCC (V)
Conditions
TA = 25°C
TA = –40°C
to +85°C
Units
Min.
Typ.
Max.
Min.
Max.
tPLH, tPHL Propagation Delay
Time
3.3 ± 0.3
CL = 15pF
5.3
7.5
1.0
9.0
ns
CL = 50pF
7.8
11.0
1.0
12.5
5.0 ± 0.5
CL = 15pF
3.6
5.5
1.0
6.5
CL = 50pF
5.1
7.5
1.0
8.5
tPZL, tPZH 3-STATE Output
Enable Time
3.3 ± 0.3 RL = 1k
CL = 15pF
6.6
10.6
1.0
12.5
ns
CL = 50pF
9.1
14.1
1.0
16.0
5.0 ± 0.5
CL = 15pF
4.7
7.3
1.0
8.5
CL = 50pF
6.2
9.3
1.0
10.5
tPLZ, tPHZ 3-STATE Output
Disable Time
3.3 ± 0.3 RL = 1k
CL = 50pF
10.3
14.0
1.0
16.0
ns
5.0 ± 0.5
CL = 50pF
6.7
9.2
1.0
10.5
tOSLH,
tOSHL
Output to Output
Skew
3.3 ± 0.3 (3)
CL = 50pF
1.5
ns
5.0 ± 0.5
CL = 50pF
1.0
CIN
Input Capacitance
VCC = Open
4
10
pF
COUT
Output Capacitance
VCC = 5.0V
6
pF
CPD
Power Dissipation
Capacitance
(4)
17
pF
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