SN74HC590AN-NG Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74HC590AN-NG is an 8-bit binary counter with 3-state output registers, operating from 2 V to 6 V supply and capable of 25 MHz counting frequency in a 16-pin DIP package. Features separate clock inputs for the counter and output register, allowing flexible count-then-latch operation. Suited for address generation, event counting, and frequency division in digital logic designs.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74HC590AN-NG Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit binary counter with separate 3-state output register
- Operates from 2 V to 6 V supply for TTL and CMOS compatibility
- Counting frequency up to 25 MHz typical
- Independent counter clock (CCLK) and register clock (RCLK) for flexible latching
- 16-pin DIP package compatible with breadboard and through-hole assembly
- High-impedance 3-state outputs for bus-sharing configurations
- HC-family CMOS low-power logic design
Applications
SN74HC590AN-NG is used in digital systems for address generation, event counting, frequency division, and tachometer circuits where an 8-bit count value must be latched and transferred to a bus independently of the counting operation. Its 3-state outputs allow multiple counters to share a common data bus, making it useful in parallel data acquisition and multi-module counter arrays. The through-hole 16-pin DIP package also suits prototyping, educational lab boards, and legacy industrial control repair applications.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC590AN-NG:
Binary Counter, HC/UH Series, Asynchronous, Positive Edge Triggered, 8-Bit, Up Direction, CMOS, PDIP16
Binary Counter, HC/UH Series, Asynchronous, Positive Edge Triggered, 8-Bit, Up Direction, CMOS, PDIP16
Frequently Asked Questions
What is the maximum counting frequency and supply voltage range for SN74HC590AN-NG?
SN74HC590AN-NG operates from a 2 V to 6 V supply and achieves a typical counting frequency of up to 25 MHz, making it compatible with standard 3.3 V and 5 V digital logic systems and fast enough for most event counting and frequency division applications.
How do the separate CCLK and RCLK inputs allow asynchronous reading of the count value without interrupting counting?
SN74HC590AN-NG has independent counter clock (CCLK) and register clock (RCLK) inputs, so the counter can increment continuously while the output register latches the current count value only when RCLK pulses. This lets a processor read a stable 8-bit count value via the 3-state outputs without stopping the counter.
Can multiple SN74HC590AN-NG devices share a single 8-bit data bus in a larger counter array?
Yes. The 3-state output register allows each SN74HC590AN-NG's 8 output pins to go to a high-impedance state, so multiple devices can connect to the same 8-bit data bus. Each device is enabled in turn using the output enable pin, enabling cascaded or parallel counter arrays without bus conflicts.
Is the 16-pin DIP package of SN74HC590AN-NG suitable for replacement in legacy industrial equipment that requires through-hole components?
Yes. The 16-pin DIP package with 2.54 mm pin pitch is a standard through-hole footprint compatible with wave soldering and breadboard insertion. It is a direct mechanical fit for legacy industrial control boards that originally specified through-hole 74HC or 74LS logic packages.
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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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