74HC4515集成電路（IC）的信號開關(guān)多路復(fù)用器解碼器規(guī)格書PDF中文資料

FEATURES

· Inverting outputs

· Output capability: standard

· ICC category: MSI

GENERAL DESCRIPTION

The 74HC/HCT4515 are high-speed Si-gate CMOS

devices and are pin compatible with “4515” of the “4000B”

series. They are specified in compliance with JEDEC

standard no. 7A.

The 74HC/HCT4515 are 4-to-16 line

decoders/demultiplexers having four binary weighted

address inputs (A0 to A3) with latches, a latch enable input

(LE), and an active LOW enable input (E). The 16 inverting

outputs (Q0 to Q15) are mutually exclusive active LOW.

When LE is HIGH, the selected output is determined by the

data on An. When LE goes LOW, the last data present at

An are stored in the latches and the outputs remain stable.

When E is LOW, the selected output, determined by the

contents of the latch, is LOW. When E is HIGH, all outputs

are HIGH. The enable input (E) does not affect the state of

the latch.

When the “4515” is used as a demultiplexer, E is the data

input and A0 to A3 are the address inputs.