74HC257; 74HCT257
Quad 2-input multiplexer; 3-state
The 74HC257; 74HCT257 is a quad 2-input multiplexer with 3-state outputs. 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 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
Parametrics
Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Package name |
---|---|---|---|---|---|---|---|
74HC257D | 2.0 - 6.0 | CMOS | ± 7.8 | 11 | low | -40~125 | SO16 |
74HC257PW | 2.0 - 6.0 | CMOS | ± 7.8 | 11 | low | -40~125 | TSSOP16 |
74HCT257D | 4.5 - 5.5 | TTL | ± 6 | 13 | low | -40~125 | SO16 |
74HCT257PW | 4.5 - 5.5 | TTL | ± 6 | 13 | low | -40~125 | TSSOP16 |
Package
Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
---|---|---|---|---|---|---|---|
74HC257D | 74HC257D,653 (933713640653) |
Active | 74HC257D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
Not available |
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 |
Not available |
74HCT257PW | 74HCT257PW,118 (935188400118) |
Active | HCT257 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
All type numbers in the table below are discontinued.
Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
---|---|---|---|---|---|---|---|
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Withdrawn / End-of-life | 74HC257D |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 |
Not available |
74HC257DB,118 (935188660118) |
Obsolete | HC257 | Not available | ||||
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 |
Not available |
74HCT257DB,118 (935190960118) |
Obsolete | HCT257 | Not available |
Environmental information
Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
---|---|---|---|---|
74HC257D | 74HC257D,653 | 74HC257D | ||
74HC257PW | 74HC257PW,118 | 74HC257PW | ||
74HCT257D | 74HCT257D,653 | 74HCT257D | ||
74HCT257PW | 74HCT257PW,118 | 74HCT257PW |
All type numbers in the table below are discontinued.
Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
---|---|---|---|---|
74HC257D | 74HC257D,652 | 74HC257D | ||
74HC257DB | 74HC257DB,112 | 74HC257DB | ||
74HC257DB | 74HC257DB,118 | 74HC257DB | ||
74HCT257D | 74HCT257D,652 | 74HCT257D | ||
74HCT257DB | 74HCT257DB,112 | 74HCT257DB | ||
74HCT257DB | 74HCT257DB,118 | 74HCT257DB |
Documentation (18)
File name | Title | Type | Date |
---|---|---|---|
74HC_HCT257 | Quad 2-input multiplexer; 3-state | Data sheet | 2024-03-22 |
AN11044 | Pin FMEA 74HC/74HCT family | Application note | 2019-01-09 |
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 |
Support
If you are in need of design/technical support, let us know and fill in the answer form we'll get back to you shortly.
Ordering, pricing & availability
Sample
As a Nexperia customer you can order samples via our sales organization.
If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.