SN74LS670NE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The SN74LS670NE4 is a 4x4 register file IC with 3-state outputs, supporting parallel-in/parallel-out operation in a 16-pin DIP package. It features 4-bit data width, 15 pF load capacitance, and right-count direction for versatile buffering. Available in stock worldwide with competitive pricing and standard through-hole mounting.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS670NE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LS670NE4?
- 4x4 register file architecture with independent read/write operations for flexible multi-register data buffering
- 3-STATE output capability enabling direct bus connections and wired-OR configurations in TTL logic systems
- LS-family low-power Schottky technology delivering high-speed performance with reduced power consumption at 5V
What is SN74LS670NE4 used for?
The SN74LS670NE4 is well-suited for scratch-pad memory applications in microprocessor systems where temporary data storage across 4 independent 4-bit registers is required. It is commonly used in data bus buffering, FIFO staging, and register file implementations within TTL-compatible digital logic designs. The 3-state outputs make it ideal for multi-master bus architectures and programmable logic controller (PLC) interfaces.
What are the specifications of SN74LS670NE4?
| YTEOL | 0 |
| Count Direction | RIGHT |
| Family | LS |
| JESD-30 Code | R-PDIP-T16 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | PARALLEL IN PARALLEL OUT |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Power Supply Current-Max (ICC) | 50mA |
| Propagation Delay (tpd) | 45ns |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia, Mexico |
Where can I find the SN74LS670NE4 datasheet?
SN74LS670NE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS670NE4?
Compatible alternatives and drop-in replacements for SN74LS670NE4:
Parallel In Parallel Out, LS Series, 16-Bit, Right Direction, True Output, TTL, PDIP16
Frequently Asked Questions
How many registers and bits per register does the SN74LS670NE4 support?
The SN74LS670NE4 implements a 4-by-4 register file, providing 4 independent registers each storing 4 bits of data, totaling 16 bits of storage capacity. Independent read and write address inputs allow simultaneous access to different registers within the same clock cycle.
What supply voltage and load capacitance does the SN74LS670NE4 require for normal operation?
The SN74LS670NE4 operates from a standard 5 V TTL supply voltage and is rated for a load capacitance of 15 pF per output pin. These parameters are consistent with the LS-family Schottky logic specifications and must be observed to maintain signal integrity on the 3-STATE bus lines.
In which PCB designs is a 16-pin DIP package like the SN74LS670NE4 preferred over surface-mount alternatives?
A 16-pin DIP package is preferred in through-hole prototyping boards, breadboard development setups, and industrial control designs requiring easy replacement without SMD rework stations. The 2.54 mm pin pitch accommodates standard IC sockets, making the SN74LS670NE4 suitable for field-serviceable equipment where component swapping matters more than board real estate.
When would a designer choose SN74LS670NE4 over an SRAM device for temporary register storage?
Designers choose the SN74LS670NE4 over SRAM when only 4 registers of 4 bits each are needed, avoiding the address decoder overhead that an 8-bit SRAM requires. With propagation delays typical of LS-family logic at under 30 ns and direct 3-STATE bus integration, it reduces component count in TTL-only designs operating at 5 V.
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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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