SN74AS169ANIn StockTexas Instruments
SN74AS169AN is a synchronous 4-bit up/down binary counter IC from Texas Instruments in the AS logic family, supporting bidirectional counting up to 75 MHz with load/preset input and TCO output. From $2.145, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74AS169AN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.1450(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Synchronous 4-bit up/down binary counter with bidirectional count direction control
- High-speed operation up to 75 MHz max frequency at nominal supply voltage
- Load/Preset input for parallel synchronous loading of counter value
- TCO (Terminal Count Output) for easy cascading of multiple counter stages
- AS-family logic with 50 pF load capacitance in standard 16-pin DIP package
Applications
The SN74AS169AN is widely used in digital systems requiring precise counting and sequencing, such as frequency dividers, event counters, and timing circuits. Its bidirectional capability makes it suitable for up/down counting applications in motor control, position tracking, and programmable logic controllers. The TCO output enables straightforward multi-stage cascading for wider counting ranges in industrial automation and embedded control designs.
Specifications
| YTEOL | 15 |
| Additional Feature | TCO OUTPUT |
| Count Direction | BIDIRECTIONAL |
| Family | AS |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 75000000Hz |
| Max I(ol) | 0.02A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| 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) | 63mA |
| Prop. Delay@Nom-Sup | 16.5ns |
| Propagation Delay (tpd) | 13ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 75MHz |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum counting frequency of the SN74AS169AN?
The SN74AS169AN supports a maximum counting frequency of 75 MHz at nominal supply voltage with a 50 pF load capacitance, making it suitable for high-speed digital counting and sequencing applications in the AS logic family.
Can the SN74AS169AN count both up and down?
Yes, the SN74AS169AN is a bidirectional counter that supports both up and down counting directions. The count direction is controlled via a dedicated input pin, allowing flexible use in applications such as position tracking, motor control, and reversible event counting.
What is the TCO output on the SN74AS169AN used for?
The TCO (Terminal Count Output) on the SN74AS169AN signals when the counter reaches its terminal count (all 1s for up-counting or all 0s for down-counting). This output is used to cascade multiple SN74AS169AN devices together to form wider counters, enabling easy expansion beyond 4 bits in digital systems.
What package type does the SN74AS169AN come in, and is it suitable for breadboarding?
The SN74AS169AN is available in a 16-pin Dual-In-Line Package (DIP), which is through-hole and fully compatible with breadboards and prototype boards. This makes it convenient for development, testing, and educational projects requiring synchronous binary counting.
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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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