CD74HC670M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC670M is a 4x4 register file IC from Texas Instruments in the HC CMOS logic family, providing four 4-bit storage registers with independent read and write address inputs for simultaneous random-access read and write operations. Key specs: 4-channel parallel-in parallel-out register file, 23MHz maximum operating frequency, 2V to 6V supply range, 16-pin SOIC package. Available RoHS-compliant from global distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC670M Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4x4 register file architecture with independent read and write address buses enables simultaneous read and write to different register locations, supporting high-throughput data buffering without pipeline stalls
- Parallel-in parallel-out (PIPO) data path with 4-bit width and four register locations provides a small, fast scratch-pad memory for storing intermediate computation results in digital logic systems
- 23MHz maximum operating frequency at nominal supply voltage with HC-family CMOS low-power consumption makes it suitable for high-speed digital glue logic, address decoding, and register-based state machines
- Wide 2V to 6V supply range in a 16-pin SOIC package ensures compatibility with 3.3V and 5V digital systems in a compact, industry-standard surface-mount footprint
Applications
The CD74HC670M serves as a fast scratch-pad register file in digital systems where multiple intermediate data values must be stored and accessed simultaneously without the latency of external SRAM, such as in arithmetic logic units, data path controllers, and FPGA glue-logic expansions. It is used in communication protocol processors to buffer register state across multiple bus cycles and in industrial control systems for storing sensor channel configuration values accessible by both a processor bus and local combinational logic. The device also appears in educational digital design courses as an example of a small multi-port memory element implemented with CMOS register file technology.
Specifications
| YTEOL | 0 |
| Count Direction | RIGHT |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARALLEL IN PARALLEL OUT |
| Max Frequency@Nom-Sup | 23000000Hz |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 50mA |
| Propagation Delay (tpd) | 315ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| fmax-Min | 23MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the register file configuration of the CD74HC670M?
The CD74HC670M is a 4x4 register file, meaning it contains four 4-bit wide register locations addressed by separate 2-bit write address (WA) and read address (RA) inputs. This architecture allows the processor or controlling logic to write to one register address and simultaneously read from a different register address in the same clock cycle, supporting non-blocking register operations essential in pipelined data paths.
Can the CD74HC670M read and write simultaneously?
Yes, the CD74HC670M features independent read and write address ports that allow simultaneous read and write operations to different register locations. The write operation is clocked (synchronous), while the read operation is asynchronous and combinational — the output reflects the content of the selected register address without requiring a separate read clock, enabling zero-latency data access for read operations while write operations are sequenced by the write clock.
What is the maximum operating frequency of the CD74HC670M?
The CD74HC670M operates up to a maximum frequency of 23MHz at nominal supply voltage with a 50pF load capacitance. This is the maximum write clock frequency for reliable data storage. Read access time is determined by the propagation delay from address inputs to data outputs, which is typically in the nanosecond range for HC-family CMOS at 5V, making it suitable for high-speed digital logic applications.
What package does the CD74HC670M come in?
The CD74HC670M is housed in a 16-pin SOIC (Small Outline IC) package with JESD-30 code R-PDSO-G16 and a plastic/epoxy body. The M suffix in the part number identifies the SOIC package version of the CD74HC670. It is RoHS-compliant with JESD-609 code e4 and is supplied in tube packaging as indicated by the product description. SOIC is a widely supported surface-mount footprint available in standard PCB design library databases.
What are typical applications for the CD74HC670M?
Typical applications include scratch-pad register files in custom digital processors and controllers, address translation buffers in bus interface circuits, look-up table implementations for small combinational functions, and configurable parameter storage in industrial sensor interfaces. It is also used as a fast local register store in state machine implementations where multiple context values must be stored and retrieved each clock cycle without accessing slower external memory.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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