SN74ALS193AN Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The SN74ALS193AN is a 4-bit synchronous up/down binary counter from Texas Instruments in the ALS logic family, featuring separate up and down clock inputs, parallel load capability, and a maximum operating frequency of 30MHz with terminal count outputs in a 16-pin DIP package. It supports bidirectional counting with independent TCO UP and TCO DOWN outputs for cascading multiple counter stages. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74ALS193AN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional 4-bit binary counter with separate up and down clock inputs enabling independent count direction control
- 30MHz maximum operating frequency with terminal count output (TCO UP and TCO DOWN) for high-speed cascaded counter chains
- Parallel load input allows presetting the counter to any 4-bit value for flexible counting sequences and modulo-N counters
- ALS logic family provides low power Schottky performance with 50pF load capacitance rating in a classic 16-pin DIP package
Applications
The SN74ALS193AN is commonly used in digital systems requiring bidirectional binary counting, such as address generators, frequency dividers, and position encoders in industrial automation and instrumentation. Its separate up/down clock and parallel load inputs make it ideal for programmable timers, modulo-N dividers, and reversible counting applications in control systems. The device is also used in legacy digital designs and educational hardware where the standard 16-pin DIP package facilitates easy prototyping and breadboarding.
Specifications
| YTEOL | 15 |
| Additional Feature | TCO UP AND TCO DOWN OUTPUTS; SEPARATE UP/DOWN CLOCK |
| Count Direction | BIDIRECTIONAL |
| Family | ALS |
| 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 | 30000000Hz |
| Max I(ol) | 0.008A |
| 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) | 22mA |
| Prop. Delay@Nom-Sup | 30ns |
| Propagation Delay (tpd) | 19ns |
| 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 | 30MHz |
| 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
Compatible alternatives and drop-in replacements for SN74ALS193AN:
Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDIP16
Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16
Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDIP16
Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16
Frequently Asked Questions
What is the maximum operating frequency of the SN74ALS193AN?
The SN74ALS193AN operates at a maximum frequency of 30MHz (30,000,000 Hz) at nominal supply voltage. This high-speed performance, combined with separate up and down clocks, makes it suitable for demanding digital counting and frequency division applications.
Does the SN74ALS193AN support parallel loading?
Yes, the SN74ALS193AN features a parallel load input that allows the counter to be preset to any 4-bit binary value synchronously. This capability is essential for programmable modulo-N counters, timer presets, and applications requiring arbitrary starting count values.
What package does the SN74ALS193AN use?
The SN74ALS193AN is housed in a 16-pin PDIP (Plastic Dual In-line Package), making it ideal for through-hole PCB assembly and prototyping on breadboards. It is rated for 50pF load capacitance and belongs to the ALS (Advanced Low-power Schottky) logic family.
How can multiple SN74ALS193AN counters be cascaded?
Multiple SN74ALS193AN counters can be cascaded using the TCO UP and TCO DOWN (terminal count) outputs. Connecting the TCO output of one stage to the clock input of the next stage allows designers to build wider counters beyond 4 bits for applications requiring larger count ranges.
What logic family does the SN74ALS193AN belong to?
The SN74ALS193AN belongs to the ALS (Advanced Low-power Schottky) logic family, which provides higher speed and lower power consumption compared to standard TTL logic. It is compatible with standard 74-series TTL and CMOS logic interfaces operating at 5V supply.
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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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