Part A
74HC245D,653
恩智浦美國股份有限公司。
- Lifecycle
- Active
- Stock
- 8186 件
- Series
- 邏輯-緩衝器、驅動器、接收器、收發器
Replacement verdict
Compatible functional replacement candidate
The 74HC245D and 74HC245D,653 are functionally equivalent octal bus transceivers from the same manufacturer, sharing identical logic function, package type, and electrical characteristics. The only distinction is the packing method, making the 74HC245D,653 a direct drop-in replacement for the 74HC245D in any application.
Logic Function
High match
Package Type
High match
Supply Voltage Range
High match
Packing Method
High match
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC245D | 74HC245D,653 | Why it matters |
|---|---|---|---|
| Manufacturer | Nexperia | Nexperia | Same manufacturer ensures consistent process, quality, and documentation for both parts. |
| Logic Family | 74HC | 74HC | Matching logic family guarantees compatible voltage thresholds and switching behavior. |
| Function | Octal bus transceiver, 3-state | Octal bus transceiver, 3-state | Identical function means the parts are functionally interchangeable in bus-interface designs. |
| Supply Voltage Range | 2.0 V to 6.0 V | 2.0 V to 6.0 V | Same operating voltage window allows use in the same 3.3 V and 5 V systems. |
| Number of Channels | 8 | 8 | Equal channel count ensures the same bus width can be driven without redesign. |
| Output Type | 3-state | 3-state | 3-state outputs are required for shared-bus applications and must match for drop-in replacement. |
| Propagation Delay (typ.) | ~8 ns at 4.5 V | ~8 ns at 4.5 V | Similar propagation delay preserves timing margins in synchronous bus designs. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature range supports the same industrial and automotive environments. |
| Package / Mounting | SO16 / Surface Mount | SO16 / Surface Mount | Same package and mounting style allow direct PCB footprint compatibility. |
| Packaging / Ordering | Tube | Tape & Reel | Different packaging affects assembly line handling and minimum order quantities, though the die is the same. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC245D,653 | 74HC245D |
|---|---|---|
| Series | 74HC | 74HC |
| Part Status | Discontinued at DigiKey | Active |
| Base Product Number | 74HC245 | - |
| Logic Type | Transceiver, Non-Inverting | Transceiver, Non-Inverting |
| Number of Elements | 1 | 1 |
| Number of Bits per Element | 8 | 8 |
| Output Type | 3-State | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA | - |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (TR) | - |
| Current - Output High Low | - | 7.8mA, 7.8mA |
Frequently asked questions
Are the 74HC245D and 74HC245D,653 the same device?
Yes. Both part numbers refer to the same Nexperia 74HC245D octal bus transceiver with 3-state outputs. The 74HC245D is the base type designation, while 74HC245D,653 is the full orderable part number that includes the packing and packaging suffix used by Nexperia and its distributors.
What does the ",653" suffix indicate on the 74HC245D,653?
The ",653" suffix is Nexperia's ordering code for tape and reel packing of the 74HC245D in the SO16 (SOT109-1) package. It does not change the electrical characteristics, function, or package type of the device; it only defines the packing format and quantity per reel.
Do the 74HC245D and 74HC245D,653 have identical electrical specifications?
Yes. Because both designations describe the same silicon device in the same SO16 package, they share identical electrical specifications, including supply voltage range (2.0 V to 6.0 V), propagation delay, input/output characteristics, and 3-state output behavior as documented in the Nexperia 74HC245 datasheet.
Can the 74HC245D and 74HC245D,653 be used interchangeably in a design?
Yes. Since they are the same device with the same package and pinout, they are functionally and physically interchangeable. The only practical difference is the ordering and packing format, so either can be used in the same PCB footprint and application.
What package do the 74HC245D and 74HC245D,653 use?
Both use the SO16 package, also identified by Nexperia as SOT109-1. This is a 16-pin small outline surface-mount package with a 1.27 mm lead pitch, suitable for standard SO16 PCB land patterns.
What is the function of the 74HC245D and 74HC245D,653?
Both are octal bus transceivers with 3-state outputs. They provide bidirectional asynchronous data transfer between two buses, with direction controlled by the DIR pin and output enable controlled by the OE pin. They are part of the 74HC high-speed CMOS logic family.
Which manufacturers produce the 74HC245D and 74HC245D,653?
The 74HC245D and 74HC245D,653 are Nexperia part numbers. The 74HC245 function is a standard logic type also offered by other manufacturers under their own part numbering and ordering suffixes, but the specific ",653" ordering suffix is associated with Nexperia's tape and reel packing.
How should the 74HC245D and 74HC245D,653 be ordered for production?
For production, the 74HC245D,653 should be specified when tape and reel packing is required for automated assembly. The 74HC245D designation may appear in datasheets and cross-references as the base type, but the full orderable part number including the packing suffix should be used on purchase orders to ensure the correct packing format is supplied.