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參數(shù)資料
| 型號： | SN54LS148J |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS |
| 中文描述： | LS SERIES, 8-BIT ENCODER, CDIP16 |
| 封裝： | 620-09 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 231K |
| 代理商： | SN54LS148J |
5-245
FAST AND LS TTL DATA
10-LINE-TO-4-LINE
AND 8-LINE-TO-3-LINE
PRIORITY ENCODERS
The SN54/74LS147 and the SN54/74LS148 are Priority Encoders. They
provide priority decoding of the inputs to ensure that only the highest order
data line is encoded. Both devices have data inputs and outputs which are
active at the low logic level.
The LS147 encodes nine data lines to four-line (8-4-2-1) BCD. The implied
decimal zero condition does not require an input condition because zero is
encoded when all nine data lines are at a high logic level.
The LS148 encodes eight data lines to three-line (4-2-1) binary (octal). By
providing cascading circuitry (Enable Input EI and Enable Output EO) octal
expansion is allowed without needing external circuitry.
The SN54/74LS748 is a proprietary Motorola part incorporating a built-in
deglitcher network which minimizes glitches on the GS output. The glitch
occurs on the negative going transition of the EI input when data inputs 0–7
are at logical ones.
The only dc parameter differences between the LS148 and the LS748 are
that (1) Pin 10 (input 0) has a fan-in of 2 on the LS748 versus a fan-in of 1 on
the LS148; (2) Pins 1, 2, 3, 4, 11, 12 and 13 (inputs 1, 2, 3, 4, 5, 6, 7) have a
fan-in of 3 on the LS748 versus a fan-in of 2 on the LS148.
The only ac difference is that tPHL from EI to EO is changed from 40 to
45 ns.
SN54/74LS147
(TOP VIEW)
SN54/74LS148
SN54/74LS748
(TOP VIEW)
SN54/74LS147
SN54/74LS148
SN54/74LS748
10-LINE-TO-4-LINE
AND 8-LINE-TO-3-LINE
PRIORITY ENCODERS
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
16
1
D SUFFIX
SOIC
CASE 751B-03
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN54LS748J | Data Selector/Multiplexer 2-Input Q; Package: TSSOP-16; No of Pins: 16; Container: Tape and Reel; Qty per Container: 2500 |
| SN74LS748D | 500mA, 8V,±4% Tolerance, Negative Voltage Regulator, Ta = -40°C to +125°C; Package: TO-220, SINGLE GAUGE; No of Pins: 3; Container: Rail; Qty per Container: 50 |
| SN74LS748N | 500mA, 8V,±4% Tolerance, Negative Voltage Regulator, Ta = 0°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Rail; Qty per Container: 75 |
| SN74LS147D | 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS |
| SN74LS147N | 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN54LS14J | 制造商:Texas Instruments 功能描述:Inverter Schmitt Trigger 6-Element Bipolar 14-Pin CDIP Tube 制造商:Texas Instruments 功能描述:INVERTER SCHMITT TRIGGER 6-ELEM BIPOLAR 14CDIP - Rail/Tube 制造商:Texas Instruments 功能描述:HEX SCHMITT TRIGGERS |
| SN54LS151J | 制造商:Texas Instruments 功能描述:Multiplexer 1-Element Bipolar 8-IN 16-Pin CDIP Tube 制造商:Texas Instruments 功能描述:MLTPLXR 1-ELEM BIPOLAR 8-IN 16CDIP - Rail/Tube |
| SN54LS153J | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:DUAL 4-TO-1 MULTIPLEXER - Rail/Tube 制造商:Texas Instruments 功能描述:Multiplexer 1-Element Bipolar Totem-Pole 8-IN 16-Pin CDIP Tube |
| SN54LS155AJ | 制造商:Texas Instruments 功能描述:Decoder/Demultiplexer Single/Dual 3/2-to-8/4 16-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN54LS156J | 制造商:Texas Instruments 功能描述:Decoder/Demultiplexer Single/Dual 3/2-to-8/4 16-Pin CDIP Tube |
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