74HC238; 74HCT238
3-to-8 line decoder/demultiplexer
The 74HC238; 74HCT238 decodes three binary weighted address inputs (A0, A1 and A2) to eight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1 and E2 and E3). Every output will be LOW unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion to a 1-of-32 (5 to 32 lines) decoder with just four '238 ICs and one inverter. The '238 can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Features and benefits
Wide supply voltage range from 2.0 to 6.0 V
CMOS low power dissipation
High noise immunity
Demultiplexing capability
Multiple input enable for easy expansion
Ideal for memory chip select decoding
Active HIGH mutually exclusive outputs
Input levels:
For 74HC238: CMOS level
For 74HCT238: TTL level
Complies with JEDEC standards
JESD8C (2.7 V to 3.6 V)
JESD7A (2.0 V to 6.0 V)
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
ESD protection:
HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
参数类型
| 型号 | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|
| 74HC238BQ | 2.0 - 6.0 | CMOS | ± 5.2 | 14 | low | -40~125 | DHVQFN16 |
| 74HC238D | 2.0 - 6.0 | CMOS | ± 5.2 | 14 | low | -40~125 | SO16 |
| 74HC238PW | 2.0 - 6.0 | CMOS | ± 5.2 | 14 | low | -40~125 | TSSOP16 |
| 74HCT238BQ | 4.5 - 5.5 | TTL | ± 4 | 18 | low | -40~125 | DHVQFN16 |
| 74HCT238D | 4.5 - 5.5 | TTL | ± 4 | 18 | low | -40~125 | SO16 |
| 74HCT238PW | 4.5 - 5.5 | TTL | ± 4 | 18 | low | -40~125 | TSSOP16 |
封装
| 型号 | 可订购的器件编号，（订购码(12NC)） | 状态 | 标示 | 封装 | 外形图 | 回流焊/波峰焊 | 包装 |
|---|---|---|---|---|---|---|---|
| 74HC238BQ | 74HC238BQ,115 (935283681115) |
Active | HC238 |
DHVQFN16 (SOT763-1) |
SOT763-1 | SOT763-1_115 | |
| 74HC238D | 74HC238D,653 (933714640653) |
Active | 74HC238D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
暂无信息 |
| 74HC238PW | 74HC238PW,118 (935189000118) |
Active | HC238 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
| 74HCT238BQ | 74HCT238BQ,115 (935283682115) |
Active | HCT238 |
DHVQFN16 (SOT763-1) |
SOT763-1 | SOT763-1_115 | |
| 74HCT238D | 74HCT238D,653 (933715120653) |
Active | 74HCT238D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
暂无信息 |
| 74HCT238PW | 74HCT238PW,118 (935189560118) |
Active | HCT238 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
下表中的所有产品型号均已停产 。
| 型号 | 可订购的器件编号，（订购码(12NC)） | 状态 | 标示 | 封装 | 外形图 | 回流焊/波峰焊 | 包装 |
|---|---|---|---|---|---|---|---|
| 74HC238D | 74HC238D,652 (933714640652) |
Withdrawn / End-of-life | 74HC238D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_652 |
| 74HC238DB | 74HC238DB,112 (935189270112) |
Obsolete | HC238 |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
暂无信息 |
| 74HC238DB,118 (935189270118) |
Obsolete | HC238 | 暂无信息 | ||||
| 74HCT238D | 74HCT238D,652 (933715120652) |
Withdrawn / End-of-life | 74HCT238D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_652 |
| 74HCT238DB | 74HCT238DB,112 (935189260112) |
Withdrawn / End-of-life | HCT238 |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
暂无信息 |
| 74HCT238DB,118 (935189260118) |
Obsolete | HCT238 | 暂无信息 | ||||
| 74HCT238PW | 74HCT238PW,112 (935189560112) |
Withdrawn / End-of-life | HCT238 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
暂无信息 |
环境信息
| 型号 | 可订购的器件编号 | 化学成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74HC238BQ | 74HC238BQ,115 | 74HC238BQ |
|
|
| 74HC238D | 74HC238D,653 | 74HC238D |
|
|
| 74HC238PW | 74HC238PW,118 | 74HC238PW |
|
|
| 74HCT238BQ | 74HCT238BQ,115 | 74HCT238BQ |
|
|
| 74HCT238D | 74HCT238D,653 | 74HCT238D |
|
|
| 74HCT238PW | 74HCT238PW,118 | 74HCT238PW |
|
|
下表中的所有产品型号均已停产 。
| 型号 | 可订购的器件编号 | 化学成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74HC238D | 74HC238D,652 | 74HC238D |
|
|
| 74HC238DB | 74HC238DB,112 | 74HC238DB |
|
|
| 74HC238DB | 74HC238DB,118 | 74HC238DB |
|
|
| 74HCT238D | 74HCT238D,652 | 74HCT238D |
|
|
| 74HCT238DB | 74HCT238DB,112 | 74HCT238DB |
|
|
| 74HCT238DB | 74HCT238DB,118 | 74HCT238DB |
|
|
| 74HCT238PW | 74HCT238PW,112 | 74HCT238PW |
|
|
文档 (21)
| 文件名称 | 标题 | 类型 | 日期 |
|---|---|---|---|
| 74HC_HCT238 | 3-to-8 line decoder/demultiplexer | Data sheet | 2024-03-21 |
| AN11044 | Pin FMEA 74HC/74HCT family | Application note | 2019-01-09 |
| 001aag754 | Block diagram: 74HC238D, 74HC238DB, 74HC238N, 74HC238PW, 74HCT238D, 74HCT238DB, 74HCT238N, 74HCT238PW | Block diagram | 2009-11-03 |
| SOT763-1 | 3D model for products with SOT763-1 package | Design support | 2019-10-03 |
| SOT109-1 | 3D model for products with SOT109-1 package | Design support | 2020-01-22 |
| SOT403-1 | 3D model for products with SOT403-1 package | Design support | 2020-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| DHVQFN16_SOT763-1_mk | plastic, dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 0.85 mm body | Marcom graphics | 2017-01-28 |
| SO16_SOT109-1_mk | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body | Marcom graphics | 2017-01-28 |
| SSOP16_SOT338-1_mk | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Marcom graphics | 2017-01-28 |
| TSSOP16_SOT403-1_mk | plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| SOT763-1 | plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body | Package information | 2023-05-11 |
| SOT109-1 | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body | Package information | 2023-11-07 |
| SOT338-1 | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Package information | 2022-06-20 |
| SOT403-1 | plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body | Package information | 2023-11-08 |
| SO-SOJ-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| SSOP-TSSOP-VSO-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| HCT_USER_GUIDE | HC/T User Guide | User manual | 1997-10-31 |
| SO-SOJ-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
支持
如果您需要设计/技术支持，请告知我们并填写 应答表 我们会尽快回复您。
Ordering, pricing & availability
样品
作为 Nexperia 的客户，您可以通过我们的销售机构订购样品。
如果您没有 Nexperia 的直接账户，我们的全球和地区分销商网络可为您提供 Nexperia 样品支持。查看官方经销商列表。