SN74ALS29854DWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74ALS29854DWE4 is an 8-to-9-bit parity bus transceiver IC from Texas Instruments in the ALS logic family, offered in a 24-pin SOIC package. It features bidirectional data transfer with parity generation A-to-B and error detection B-to-A using odd parity, with 48mA output sink current. Available from authorized distributors worldwide with in-stock inventory and global shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS29854DWE4 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
- 8-to-9-bit bidirectional parity bus transceiver with hardware parity generation and error detection in a single IC
- Odd parity generation (A to B) and parity error detection (B to A) with independent control inputs
- ALS-family logic with 48mA max output sink current and 300pF load capacitance for robust bus driving
Applications
The SN74ALS29854DWE4 is designed for high-reliability data bus applications requiring built-in parity checking and error detection across bidirectional 8-bit data paths. It is commonly used in industrial computers, telecommunications equipment, and fault-tolerant computing systems where data integrity validation is critical. The ALS logic family ensures compatibility with standard TTL bus architectures while delivering enhanced speed and drive capability.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | PARITY GENERATION A TO B; ERROR DETECTION B TO A; ODD PARITY |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ALS |
| JESD-30 Code | R-PDSO-G24 |
| Load Capacitance (CL) | 300pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.048A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP24,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 100mA |
| Prop. Delay@Nom-Sup | 8ns |
| Propagation Delay (tpd) | 13ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Trigger Type | LOW LEVEL |
| Package | Small Outline 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 SN74ALS29854DWE4:
Rochester Electronics LLC ALS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO24, PLASTIC, SO-24
Bus Transceiver, ALS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO24
Bus Transceiver, ALS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO24
Bus Transceiver, ALS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO24
Frequently Asked Questions
What parity scheme does the SN74ALS29854DWE4 use?
The SN74ALS29854DWE4 uses odd parity. It generates parity when transmitting from A to B direction and detects parity errors when receiving in the B to A direction, providing built-in data integrity checking for 8-bit bus systems.
What is the output drive capability of the SN74ALS29854DWE4?
The SN74ALS29854DWE4 has a maximum output sink current (IOL) of 48mA and supports a 300pF load capacitance, making it suitable for driving heavy bus loads in backplane and multi-card computing systems.
What package is the SN74ALS29854DWE4 available in?
The SN74ALS29854DWE4 is housed in a 24-pin Small Outline Package (SOIC), per JESD-30 code R-PDSO-G24. This surface-mount package enables compact PCB layouts while maintaining compatibility with standard 24-pin footprints.
What logic family does the SN74ALS29854DWE4 belong to?
The SN74ALS29854DWE4 belongs to the ALS (Advanced Low-power Schottky) logic family, which offers improved speed and lower power consumption compared to standard LS-TTL, while maintaining full TTL bus compatibility with independent directional control.
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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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