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參數(shù)資料
| 型號： | 933757680652 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 編、解碼器及復用、解復用 |
| 英文描述： | HCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO24 |
| 封裝： | SO-24 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 62K |
| 代理商： | 933757680652 |
September 1993
2
Philips Semiconductors
Product specication
4-to-16 line decoder/demultiplexer with
input latches; inverting
74HC/HCT4515
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.
QUICK REFERENCE DATA
GND = 0 V; Tamb =25 °C; tr =tf = 6 ns
Notes
1. CPD is used to determine the dynamic power dissipation (PD in W):
PD =CPD × VCC2 × fi +∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
∑ (CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC 1.5 V
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
tPHL/ tPLH
propagation delay An to Qn
CL = 15 pF; VCC =5 V
25
26
ns
CI
input capacitance
3.5
pF
CPD
power dissipation capacitance per package
notes 1 and 2
44
46
pF
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