SN74ACT2235-20PM Texas Instruments Integrated Circuit (Quad Flat Packages) In Stock
SN74ACT2235-20PM is a 9216-bit bi-directional FIFO memory IC by Texas Instruments with 9-bit wide data paths and bypass-transceiver capability. Key specs: 25 ns max access time, 50 MHz max clock, 64-pin LQFP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ACT2235-20PM 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
- 9216-bit bi-directional FIFO with 9-bit data width enabling simultaneous bidirectional data buffering for dual-bus communication systems
- 25 ns maximum access time and 50 MHz clock frequency supporting high-throughput data transfer in fast digital systems
- Integrated bypass-transceiver (BYPASS-XCVR) feature allowing direct pass-through mode for flexible system architecture
- 64-pin LQFP package with 20 ns cycle time enabling dense PCB layout for high-speed data buffering in backplane and bus applications
Applications
The SN74ACT2235-20PM is used as a data rate matching and flow control buffer in high-speed digital systems including DSP bus interfaces, multi-processor communication, and FPGA-to-FPGA data exchange. Its bidirectional FIFO capability enables decoupling of two independent data buses operating at different speeds or with different control timing. The device is commonly deployed in telecommunications equipment, networking infrastructure, and industrial computing systems requiring reliable high-speed data buffering.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Access Time-Max | 25ns |
| Additional Feature | BYPASS-XCVR |
| Clock Frequency-Max (fCLK) | 50MHz |
| Cycle Time | 20ns |
| JESD-30 Code | S-PQFP-G64 |
| Memory Density | 9216bit |
| Memory IC Type | BI-DIRECTIONAL FIFO |
| Memory Width | 9 |
| Number of Functions | 1 |
| Number of Words | 1024words |
| Number of Words Code | 1000 |
| Operating Mode | ASYNCHRONOUS |
| Organization | 1KX9 |
| Output Characteristics | 3-STATE |
| Output Enable | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP64,.47SQ,20 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, LOW PROFILE, FINE PITCH |
| Parallel/Serial | PARALLEL |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.71 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74ACT2235-20PM:
Frequently Asked Questions
What is a bidirectional FIFO and how does the SN74ACT2235-20PM implement it?
A bidirectional FIFO is a first-in, first-out memory buffer that can transfer data in both directions between two buses. The SN74ACT2235-20PM implements a 9216-bit bidirectional FIFO with a 9-bit data width, allowing data to flow from port A to port B or from port B to port A, enabling two independent processors or buses to exchange data asynchronously without timing conflicts.
What is the memory density and data width of the SN74ACT2235-20PM?
The SN74ACT2235-20PM provides 9216 bits of total FIFO storage with a 9-bit data width. This 9-bit width allows storage of 8-bit data bytes along with an additional parity or flag bit, making it suitable for error-detection applications. The total capacity of 1024 words (9216 ÷ 9) provides buffering for moderate data burst sizes in bus interface designs.
What is the bypass-transceiver feature of the SN74ACT2235-20PM?
The bypass-transceiver (BYPASS-XCVR) feature allows the SN74ACT2235-20PM to operate in a direct pass-through mode, bypassing the FIFO storage and acting as a simple bidirectional transceiver. This provides design flexibility, allowing the same device to serve as either a FIFO buffer or a direct bus transceiver depending on system requirements, reducing the need for separate components.
What package does the SN74ACT2235-20PM use and what are its speed specifications?
The SN74ACT2235-20PM is available in a 64-pin LQFP (Low-profile Quad Flat Package), a standard surface-mount package with fine-pitch leads. It operates at up to 50 MHz maximum clock frequency with a 20 ns cycle time and 25 ns maximum access time. The '-20PM' suffix designates the 20 ns speed grade in the plastic LQFP package.
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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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