SN74LS49 BCD 到 7 段解码器/驱动器
|
SN74LS49 |
| Voltage Nodes(V) |
5 |
| Vcc range(V) |
4.75 to 5.25 |
| Input Level |
TTL |
| Output Level |
TTL |
| Output Drive(mA) |
-0.4/8 |
| Output |
2S |
| From |
4 |
| To |
7 |
| Rating |
Catalog |
| Technology Family |
LS |
SN74LS49 描述
The '46A, '47A, and 'LS47 feature active-low outputs designed for driving, common-anode LEDs or incandescent indicators directly. The '48, 'LS48, and 'LS49 feature active-high outputs for driving lamp buffers or common-cathode LEDs. All of the circuits except 'LS49 have full ripple-blanking input/output controls and a lamp test input. The 'LS49 circuit incorporates a direct blanking input. Segment identification and resultant displays are shown below. Display patterns for BCD input counts above 9 are unique symbols to authenticate input conditions.
The '46A, '47A, '48, 'LS47, and 'LS48 circuits incorporate automatic leading and/or trailing-edge zero-blanking control (RBI\ and RBO\). Lamp test (LT\) of these types may be performed at any time when the BI\/RBO\ node is at a high level.
SN74LS49 特性
- '46A, '47A, 'LS47 feature
- Open-Collector Outputs Drive Indicators Directly
- Lamp-Test Provision
- Leading/Trailing Zero Suppression
- '48, 'LS48 feature
- Internal Pull-Ups Eliminate Need for External Resistors
- Lamp-Test Provision
- Leading/Trailing Zero Suppression
- 'LS49 feature
- Open-Collector Outputs
- Blanking Input
- All Circuit Types Feature Lamp Intensity Modulation Capability
SN74LS49 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| SN74LS49N |
ACTIVE |
0 to 70 |
2.20 | 1ku |
PDIP (N) | 16 |
25 | TUBE |
|
| SN74LS49N3 |
OBSOLETE |
0 to 70 |
|
PDIP (N) | 16 |
|
|
| SN74LS49NE4 |
ACTIVE |
0 to 70 |
2.20 | 1ku |
PDIP (N) | 16 |
25 | TUBE |
|
SN74LS49 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| SN74LS49N |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
SN74LS49N |
SN74LS49N |
| SN74LS49NE4 |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
SN74LS49NE4 |
SN74LS49NE4 |
SN74LS49 应用技术支持与电子电路设计开发资源下载
- SN74LS49 数据资料 dataSheet 下载.PDF
- TI 德州仪器照明解决方案产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
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- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
