SNJ54ALS161BJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54ALS161BJ is a 4-bit synchronous binary counter from Texas Instruments in a 16-pin Ceramic DIP package. It features synchronous preset, asynchronous clear, and TCO output with ALS-family speed and 50 pF load capacitance. Available from stock worldwide with competitive pricing and full military-temperature reliability.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54ALS161BJ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.0000(MOQ 1)
- 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 parallel load and asynchronous clear for flexible counting control
- ALS-family high-speed TTL logic with TCO (Terminal Count Output) enabling easy cascading of multiple counter stages
- Ceramic DIP-16 (CDIP-J-16) hermetic package rated for extended military temperature range with JESD-30 R-GDIP-T16 compliance
Applications
The SNJ54ALS161BJ is well suited for frequency division, address generation, and sequencing circuits in military and aerospace systems requiring high reliability. Its synchronous preset and TCO output make it ideal for cascaded multi-stage counters in ruggedized digital control and instrumentation equipment. The hermetic ceramic package and ALS-speed performance also serve timing and clock-distribution applications in harsh industrial environments.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | TCO OUTPUT |
| Count Direction | UP |
| Family | ALS |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 22000000Hz |
| Max I(ol) | 0.008A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 21mA |
| Prop. Delay@Nom-Sup | 20ns |
| Propagation Delay (tpd) | 25ns |
| Qualification Status | Not Qualified |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 22MHz |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the counting direction and maximum load capacitance of the SNJ54ALS161BJ?
The SNJ54ALS161BJ counts only in the UP direction (binary count, 0 through 15). Its specified load capacitance is 50 pF, which determines the output drive and timing characteristics consistent with the ALS logic family specifications.
How can multiple SNJ54ALS161BJ devices be cascaded for wider counting applications?
Cascading is straightforward using the TCO (Terminal Count Output) pin. When the counter reaches its maximum count of 15, TCO goes active and can be connected to the enable input of the next stage, allowing construction of 8-bit, 12-bit, or wider synchronous counters without additional glue logic.
What package does the SNJ54ALS161BJ use and what temperature range does it support?
The SNJ54ALS161BJ is housed in a 16-pin Ceramic Dual-In-Line (CDIP-J-16) hermetic package conforming to JESD-30 code R-GDIP-T16. The ceramic hermetic construction targets military and aerospace applications requiring operation across the full military temperature range for maximum environmental reliability.
Is the SNJ54ALS161BJ RoHS compliant and lead-free?
Yes, the SNJ54ALS161BJ carries a Pb-free code of 'Yes' and JESD-609 code e0, indicating it meets lead-free and RoHS environmental compliance requirements, making it suitable for modern designs that must adhere to hazardous substance regulations.
What are common alternatives or substitutes for the SNJ54ALS161BJ?
Functional equivalents include the SN74ALS161B (commercial temperature range, plastic DIP), the SN54LS161A (LS-family, ceramic DIP), and the CD74HC163 (CMOS, lower power). Selection depends on speed requirements, power budget, temperature range, and package preference for the target application.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
LM3911N
Dual-In-Line Packages
Integrated Circuit
CC430F5143IRGZT
Quad Flat No-Lead
Integrated Circuit
CD54HC00F
Ceramic Dual-In-Line Packages
Integrated Circuit
CD54HCT86F
Ceramic Dual-In-Line Packages
Integrated Circuit
CDCL1810RGZR
Quad Flat No-Lead
Integrated Circuit
CDC2351DBR
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $9.0000 | $9.00 |
| 4+ | $6.6000 | $26.40 |
| 12+ | $6.0000 | $72.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”