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參數(shù)資料
| 型號： | MC74HC157AN |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quad 2-Input Data Selectors/Multiplexers |
| 中文描述： | HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16 |
| 封裝： | 648-08 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 222K |
| 代理商： | MC74HC157AN |
MC54/74HC157A
High–Speed CMOS Logic Data
DL129 — Rev 6
3
MOTOROLA
Iout = 0
μ
A
Current (per Package)
NOTE:Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
Symbol
Parameter
V
25 C
Unit
tPHL
Maximum Propagation Delay, Input A or B to Output Y
(Figures 1 and 4)
2.0
4.5
105
21
85 C
130
125 C
160
32
ns
(Figures 2 and 4)
4.5
22
26
33
6.0
17
28
26
tTLH,
Maximum Output Transition Time, Any Output
2.0
75
21
110
ns
Speed CMOS Data Book (DL129/D).
95
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
33
pF
PIN DESCRIPTIONS
INPUTS
A0, A1, A2, A3 (Pins 2, 5, 11, 14)
Nibble A inputs. The data present on these pins is trans-
ferred to the outputs when the Select input is at a low level
and the Output Enable input is at a low level. The data is
presented to the outputs in noninverted form.
B0, B1, B2, B3 (Pins 3, 6, 10, 13)
Nibble B inputs. The data present on these pins is trans-
ferred to the outputs when the Select input is at a high level
and the Output Enable input is at a low level. The data is
presented to the outputs in noninverted form.
OUTPUTS
Y0, Y1, Y2, Y3 (Pins 4, 7, 9, 12)
Data outputs. The selected input Nibble is presented at
these outputs when the Output Enable input is at a low level.
The data present on these pins is in its noninverted form. For
the Output Enable input at a high level, the outputs are at a
low level.
CONTROL INPUTS
Select (Pin 1)
Nibble select. This input determines the data word to be
transferred to the outputs. A low level on this input selects
the A inputs and a high level selects the B inputs.
Output Enable (Pin 15)
Output Enable input. A low level on this input allows the
selected input data to be presented at the outputs. A high
level on this input sets all outputs to a low level.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC74HC157AND | 制造商:Motorola Inc 功能描述: |
| MC74HC157ANG | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-6V Quad 2-Input Data Selector RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MC74HC157N | 制造商:Motorola Inc 功能描述: |
| MC74HC158ADR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:ON Semiconductor 功能描述: |
| MC74HC158AF | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:ON Semiconductor 功能描述: |
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