SN74AHC594NE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments SN74AHC594NE4 is a single 8-bit serial-in, serial/parallel-out shift register from the AHC logic family, operating up to 115 MHz with registered parallel outputs. Available in a 16-pin PDIP package, it is used for serial-to-parallel data expansion in microcontroller-based I/O systems.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AHC594NE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit serial-in, parallel-out shift register with registered parallel outputs
- Maximum operating frequency of 115 MHz at nominal supply voltage
- AHC logic family providing high-speed, low-power operation
- Unregistered serial output available for daisy-chaining multiple shift registers
- 16-pin PDIP package for through-hole prototyping and legacy board designs
Applications
The SN74AHC594NE4 is widely used in microcontroller I/O expansion applications where SPI or serial bus signals need to drive multiple parallel outputs such as LED arrays, relay banks, and motor driver enable lines. Its 115 MHz maximum operating frequency makes it suitable for high-speed data bus interfacing in digital display controllers and FPGA peripheral boards. The registered parallel output latch provides clean, glitch-free data transfer in noise-sensitive industrial control systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | PARALLEL OUTPUT IS REGISTERED; UNREGISTERED SERIAL OUTPUT AVAILABLE |
| Count Direction | RIGHT |
| Family | AHC/VHC/H/U/V |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | SERIAL IN PARALLEL OUT |
| Max Frequency@Nom-Sup | 115000000Hz |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 75mA |
| Propagation Delay (tpd) | 13.9ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 115MHz |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74AHC594NE4:
Serial In Parallel Out, AHC/VHC/H/U/V Series, 8-Bit, Right Direction, True Output, CMOS, PDIP16
Frequently Asked Questions
At what maximum clock frequency can SN74AHC594NE4 operate, and what logic supply voltage does it use?
The SN74AHC594NE4 operates at a maximum frequency of 115 MHz and belongs to the AHC logic family, which typically operates from a 2 V to 5.5 V supply range. This combination of high speed and wide supply range makes it compatible with both 3.3 V and 5 V microcontroller serial interfaces in industrial and consumer designs.
How can multiple SN74AHC594NE4 devices be connected to expand parallel output count beyond 8 bits?
The SN74AHC594NE4 provides an unregistered serial output pin, which feeds directly into the serial input of a cascaded second device. By daisy-chaining multiple ICs, designers can expand parallel output capacity in 8-bit increments — for example, two cascaded devices give 16 parallel outputs driven from a single microcontroller SPI bus with only 3 control signals.
Is the SN74AHC594NE4 RoHS-compliant and what should buyers know about its lifecycle status?
The SN74AHC594NE4 is RoHS-compliant (JESD-609 e4, halogen-free) and available in the standard 16-pin PDIP through-hole package. The YTEOL indicator shows 0, which means buyers planning new designs should verify current lifecycle status with Texas Instruments or authorized distributors and consider the SOIC or smaller SMT variants of the 74AHC594 for long-term production programs.
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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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