参数资料
型号: 74VHCT244AMTC
厂商: Fairchild Semiconductor
文件页数: 5/9页
文件大小: 0K
描述: IC BUFF/DVR TRI-ST DUAL 20TSSOP
标准包装: 73
系列: 74VHCT
逻辑类型: 缓冲器/线路驱动器,非反相
元件数: 2
每个元件的位元数: 4
输出电流高,低: 8mA,8mA
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 管件
产品目录页面: 1213 (CN2011-ZH PDF)
其它名称: 74VHCT244AMTC-ND
74VHCT244AMTCFS
74VHCT244A
Octal
Buff
er/Line
Driver
with
3-ST
A
TE
Outputs
1997 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHCT244A Rev. 1.3
5
AC Electrical Characteristics
Notes:
7. Parameter guaranteed by design. tOSLH = |tPLH max – tPLH min|; tOSHL = |tPHL max – tPHL min|
8. 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 F/F). The total CPD when n pcs. of the Octal D Flip-Flop operates
can be calculated by the equation: CPD (total) = 20 + 12n
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
5.0 ± 0.5
CL = 15pF
5.4
7.4
1.0
8.5
ns
CL = 50pF
5.9
8.4
1.0
9.5
tPZL, tPZH
3-STATE Output
Enable Time
5.0 ± 0.5 RL = 1k CL = 15pF
7.7
10.4
1.0
12.5
ns
CL = 50pF
8.2
11.4
1.0
13.5
tPLZ, tPHZ
3-STATE Output
Disable Time
5.0 ± 0.5 RL = 1k CL = 50pF
8.8
11.4
1.0
13.0
ns
tOSLH, tOSHL Output to Output
Skew
5.0 ± 0.5 (7)
1.0
ns
CIN
Input Capacitance
VCC = Open
4
10
pF
COUT
Output Capacitance
VCC = 5.0V
9
pF
CPD
Power Dissipation
Capacitance
(8)
18
pF
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