Part A
74HC245D
Toshiba Semiconductor and Storage
- Lifecycle
- Active
- Stock
- 4218 PCS
- Package
- SOIC-14
- Series
- Lógica - Buffers, Drivers, Receivers, Transceivers
Replacement verdict
Not a drop-in replacement
The 74HC245D and 74HC251D-Q100J are functionally unrelated devices: the former is an octal bidirectional bus transceiver with 3-state outputs, while the latter is a single 8-channel multiplexer with 3-state complementary outputs. They differ in logic function, channel configuration, output behavior, and package/pinout, so neither can directly substitute for the other in an existing design without significant circuit redesign.
Different logic function
Different channel configuration
Different output type
Different package and pinout
Parts at a glance
Part B
74HC251D-Q100J
Nexperia USA Inc.
- Lifecycle
- Active
- Stock
- 6040 PCS
- Package
- SOIC-16
- Series
- Lógica - Conmutadores de sinais, Multiplexers, Decodificadores
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC245D | 74HC251D-Q100J |
|---|---|---|
| Supplier | - | Nexperia USA Inc. |
| Series | 74HC | Automotive, AEC-Q100, 74HC |
| Part Status | Active | Active |
| Type | - | Multiplexer |
| Circuit | - | 1 x 8:1 |
| Independent Circuits | - | 1 |
| Current - Output High Low | 7.8mA, 7.8mA | 5.2mA, 5.2mA |
| Voltage Supply Source | - | Single Supply |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Logic Type | Transceiver, Non-Inverting | - |
| Number of Elements | 1 | - |
| Number of Bits per Element | 8 | - |
| Output Type | 3-State | - |