CD74AC163EE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments CD74AC163EE4 is a 4-bit synchronous binary counter in the AC logic family, featuring synchronous clear, load, and count-enable inputs rated to 50 pF load capacitance in a 16-pin DIP package. From $0.45 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74AC163EE4 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
- 4-bit synchronous binary counter with synchronous clear enabling glitch-free resets in high-speed digital pipelines
- AC CMOS logic family operation supporting wide supply range with high noise immunity and 50 pF load drive capability
- Synchronous load and terminal count output (TCO) simplifying cascade for wider counters in a 16-pin DIP package
Applications
The CD74AC163EE4 is used in digital frequency dividers, timing circuits, and event counters in industrial control and communication equipment. Its synchronous load and clear inputs make it ideal for programmable timers and address sequencers where precise state control is required. The AC logic family ensures reliable operation at high clock rates with strong noise immunity in both 5 V and 3.3 V systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | TCO OUTPUT |
| Count Direction | UP |
| Family | AC |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Mode of Operation | SYNCHRONOUS |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Propagation Delay (tpd) | 207ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 90MHz |
| 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 CD74AC163EE4:
Counter, AC Series, Synchronous, Up Direction, CMOS, PDIP16
Binary Counter, AC Series, Synchronous, Positive Edge Triggered, Up Direction, CMOS, PDIP16
Frequently Asked Questions
What load capacitance does the CD74AC163EE4 support, and how does that affect PCB layout choices?
The CD74AC163EE4 is specified for a 50 pF load capacitance on its outputs. When driving PCB traces longer than a few centimeters, designers should keep the capacitive load below 50 pF to maintain the AC family's high-speed switching performance and avoid excessive propagation delay beyond the datasheet timing guarantees.
How can multiple CD74AC163EE4 devices be cascaded to build an 8-bit or 16-bit counter?
Two CD74AC163EE4 devices can be cascaded by connecting the terminal count output (TCO) of the lower 4-bit stage to the count-enable input of the next stage, creating an 8-bit counter with a maximum count of 255. Each additional 4-bit stage doubles the count range, and the synchronous architecture keeps all stages aligned to the clock edge with minimal skew.
In what applications is the CD74AC163EE4 preferred over asynchronous ripple counters?
Synchronous binary counters like the CD74AC163EE4 are preferred over ripple counters in applications such as address generation, frequency synthesis, and state machines where glitch-free transitions are critical. Because all 4 output bits change synchronously on the rising clock edge, decoding logic does not see spurious intermediate states, reducing potential hazards in 5 V digital systems with tight timing budgets.
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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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