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参数资料
| 型号： | SN74LS148N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 算术逻辑单元 |
| 英文描述： | LS SERIES, 8-BIT ENCODER, INVERTED OUTPUT, PDIP16 |
| 封装： | ROHS COMPLIANT, PLASTIC, DIP-16 |
| 文件页数： | 24/26页 |
| 文件大小： | 831K |
| 代理商： | SN74LS148N |
SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10LINE TO 4LINE AND 8LINE TO 3LINE PRIORITY ENCODERS
SDLS053B OCTOBER 1976 REVISED MAY 2004
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, VCC (see Note 1)
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI: ’147, ’148
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
’LS147, ’LS148
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inter-emitter voltage: ’148 only (see Note 2)
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance
θJA (see Note 3): D package
73
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
67
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
64
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. Voltage values, except inter-emitter voltage, are with respect to the network ground terminal.
2. This is the voltage between two emitters of a multiple-emitter transistor. For ’148 circuits, this rating applies between any two of the
eight data lines, 0 through 7.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 4)
SN54’
SN74’
SN54LS’
SN74LS’
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC Supply voltage
4.5
5
5.5
4.75
5
5.25
4.5
5
5.5
4.75
5
5.25
V
IOH
High-level output current
800
400
A
IOL
Low-level output current
16
4
8
mA
TA
Operating free-air temperature
55
125
0
70
55
125
0
70
°C
NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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相关代理商/技术参数 |
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|---|---|
| SN74LS148N | 制造商:Texas Instruments 功能描述:Decoder / Encoder / Multiplexer / Demult |
| SN74LS148N3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS148NDS | 制造商:Motorola Inc 功能描述:74LS148NDS |
| SN74LS148NE4 | 功能描述:编码器、解码器、复用器和解复用器 8-line to 3-line Priority encoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74LS148NMOT88 | 制造商:Motorola 功能描述:74LS148N SB-12 |
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