Features and benefits
Wide supply voltage range from 2.0 V to 6.0 V
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
Non-inverting data path
3-state outputs interface directly with system bus
Input levels:
For 74HC257: CMOS level
For 74HCT257: TTL level
- ESD protection:
HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
參數類型
| 型號 | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC257D | 2.0?-?6.0 | CMOS | ± 7.8 | 11 | low | -40~125 | 92 | 9.6 | 52 | SO16 |
| 74HC257PW | 2.0?-?6.0 | CMOS | ± 7.8 | 11 | low | -40~125 | 125 | 4.5 | 54.6 | TSSOP16 |
| 74HCT257D | 4.5?-?5.5 | TTL | ± 6 | 13 | low | -40~125 | 92 | 9.6 | 52 | SO16 |
| 74HCT257PW | 4.5?-?5.5 | TTL | ± 6 | 13 | low | -40~125 | 125 | 4.5 | 54.6 | TSSOP16 |
封裝
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態 | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74HC257D | 74HC257D,653 (933713640653) |
Active | 74HC257D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
暫無信息 |
| 74HC257PW | 74HC257PW,118 (935174680118) |
Active | HC257 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
| 74HCT257D | 74HCT257D,653 (933713650653) |
Active | 74HCT257D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
暫無信息 |
| 74HCT257PW | 74HCT257PW,118 (935188400118) |
Active | HCT257 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
下表中的所有產品型號均已停產 。
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態 | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74HC257D | 74HC257D,652 (933713640652) |
Withdrawn / End-of-life | 74HC257D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_652 |
| 74HC257DB | 74HC257DB,112 (935188660112) |
Obsolete | HC257 |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
暫無信息 |
| 74HC257DB,118 (935188660118) |
Obsolete | HC257 | 暫無信息 | ||||
| 74HCT257D | 74HCT257D,652 (933713650652) |
Withdrawn / End-of-life | 74HCT257D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_652 |
| 74HCT257DB | 74HCT257DB,112 (935190960112) |
Obsolete | HCT257 |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
暫無信息 |
| 74HCT257DB,118 (935190960118) |
Obsolete | HCT257 | 暫無信息 |
環境信息
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74HC257D | 74HC257D,653 | 74HC257D |
|
|
| 74HC257PW | 74HC257PW,118 | 74HC257PW |
|
|
| 74HCT257D | 74HCT257D,653 | 74HCT257D |
|
|
| 74HCT257PW | 74HCT257PW,118 | 74HCT257PW |
|
|
下表中的所有產品型號均已停產 。
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74HC257D | 74HC257D,652 | 74HC257D |
|
|
| 74HC257DB | 74HC257DB,112 | 74HC257DB |
|
|
| 74HC257DB | 74HC257DB,118 | 74HC257DB |
|
|
| 74HCT257D | 74HCT257D,652 | 74HCT257D |
|
|
| 74HCT257DB | 74HCT257DB,112 | 74HCT257DB |
|
|
| 74HCT257DB | 74HCT257DB,118 | 74HCT257DB |
|
|
文檔 (19)
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| 74HC_HCT257 | Quad 2-input multiplexer; 3-state | Data sheet | 2024-03-22 |
| AN11044 | Pin FMEA 74HC/74HCT family | Application note | 2019-01-09 |
| AN90063 | Questions about package outline drawings | Application note | 2025-06-13 |
| mgr280 | Block diagram: 74HC257D, 74HC257DB, 74HC257N, 74HC257PW, 74HCT257D, 74HCT257DB, 74HCT257N, 74HCT257PW | Block diagram | 2009-11-04 |
| 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 |
| 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 |
| 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 |
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