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參數資料
| 型號： | MC74HC154N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 1-of-16 Decoder/Demultiplexer |
| 中文描述： | HC/UH SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數： | 3/7頁 |
| 文件大小： | 221K |
| 代理商： | MC74HC154N |
MC54/74HC154
High–Speed CMOS Logic Data
DL129 — Rev 6
3
MOTOROLA
Symbol
Parameter
V
25 C
85 C
2.0
Unit
tPLH,
Maximum Propagation Delay, Input A to Output Y
190
240
125 C
285
ns
tPHL
(Figures 2 and 3)
4.5
35
53
(Figures 2 and 3)
4.5
6.0
15
13
44
22
19
1. For propagation delays with loads other than 50 pF, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
2. Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
19
16
CPD
Power Dissipation Capacitance (Per Package)*
* Used to determine the no–load dynamic power consumption: PD = CPD VCC2f + ICC VCC. For load considerations, see Chapter 2 of the
Motorola High–Speed CMOS Data Book (DL129/D).
Typical @ 25
°
C, VCC = 5.0 V
80
pF
PIN DESCRIPTIONS
INPUTS
A0, A1, A2, A3 (Pins 23, 22, 21, 20)
Address inputs. These inputs, when the 1–of–16 decoder
is enabled, determine which of its sixteen active–low outputs
is selected.
OUTPUTS
Y0 – Y15 (Pins 1 – 11, 13 – 17)
Active–low outputs. These outputs assume a low level
when addressed and both chip–select inputs are active.
These outputs remain high when not addressed or a chip–
select input is high.
CONTROL INPUTS
CS1, CS2 (Pins 18, 19)
Active–low chip–select inputs. With low levels on both of
these inputs, the outputs of the decoder follow the Address
inputs. A high level on either input forces all outputs high.
FUNCTION TABLE
Inputs
Outputs
CS1
CS2
A3
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
H
L
H
X
X
X
X
X
X
X
X
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H = High Level, L = Low Level, X = Don’t Care
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