SN74F163ANS Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The SN74F163ANS is a fast 4-bit synchronous binary counter IC with internal look-ahead carry circuitry, synchronous reset, and parallel load capability, housed in a 16-pin DIP package for high-speed digital counting and timing applications.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74F163ANS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4-bit synchronous binary counter with internal look-ahead carry
- Synchronous clear for glitch-free reset operation
- Parallel load for presettable counting sequences
- Fast-series (F) logic for propagation delays under 10 ns
- 16-pin DIP package for breadboard and through-hole PCB use
- Cascadable carry output for multi-stage wide counter designs
Applications
The SN74F163ANS is used in high-speed digital timing circuits, frequency dividers, and address generators in classic logic designs. It serves as a building block for programmable counter chains in FPGA prototyping boards and legacy TTL-based industrial controllers. Educational electronics labs and retro-computing restoration projects also rely on this device for its well-known pinout and reliable fast-logic performance.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74F163ANS:
Binary Counter, F/FAST Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, PDSO16
Binary Counter, F/FAST Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, PDSO16
Frequently Asked Questions
How does the synchronous reset of the SN74F163ANS differ from an asynchronous reset in a counter design?
The SN74F163ANS uses a synchronous clear input, meaning the counter resets to 0000 only on the rising edge of the clock rather than immediately when the clear pin is asserted. This eliminates unwanted glitch pulses that can occur with asynchronous resets at high clock frequencies, improving signal integrity in fast digital systems running above 50 MHz.
Can multiple SN74F163ANS devices be cascaded to build wider counters?
Yes, the SN74F163ANS provides a carry-out (RCO) terminal that enables direct cascading. By connecting RCO of one stage to the enable inputs of the next stage, designers build 8-bit, 12-bit, or wider synchronous counters with look-ahead carry propagation, keeping counting errors low even at clock frequencies approaching the device's maximum rated speed.
What logic family and propagation delay level should designers expect from the SN74F163ANS?
The SN74F163ANS belongs to the Fast (F) TTL logic family, which offers typical propagation delays of approximately 5 ns to 8 ns, roughly twice as fast as standard LS-TTL. This makes it suitable for clock rates above 100 MHz in counters and timing state machines where LS-TTL would introduce excessive delay through a multi-stage cascade.
For which legacy or retro digital systems is the SN74F163ANS still a viable component choice?
The SN74F163ANS remains available for legacy industrial control panels, vintage computing boards from the 1980s and 1990s, and educational training kits that standardized on the 74163 pinout. Its 16-pin DIP package is easy to insert in sockets, and its 4-bit parallel load with synchronous clear makes it a drop-in replacement for earlier 74LS163 devices in repair or reverse-engineering projects.
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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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