|
本帖最后由 超級狗 于 2020-6-11 23:35 编辑 , g/ R" P- f6 ~5 e9 W$ C# {
& k6 G9 B8 R& ~5 s- ]Single Gate Little Logic 通常有 Power Isolation 的功能,沒電時輸出就是高阻抗(Hi-z)了。 i/ @" o* k# x- E/ |' j
4 ]4 ~4 e6 e/ p/ F0 F: S
所以選擇沒有 Output Enable 的 74LVC1G17 Non-Inverting Schmitt-Trigger Buffer 也可以。% W- D L# _. @ j$ a
7 M7 s7 B: C6 D& \6 ^The 74LVC1G17 is a single 1-input Schmitt-trigger buffer with a standard totem pole output. The device is designed for operation with a power supply range of 1.65V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables the output preventing damaging current backflow when the device is powered down.2 G; G9 m+ {- R. p4 o
7 t- p& q; a% e7 v, y同理,74LVC1G08 Single 2-Input AND Gate 和 74LVC1G32 Single 2-Input OR Gate,把兩個輸入接一起也可以。7 J, M/ O; F2 ^8 ~4 O
. K( D/ h+ |+ B6 W0 ?
1 k% b1 W$ g3 j1 K/ T ?
/ C2 {( o/ ]4 B* q4 O |
|