74FCT162646CTPVC Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments 74FCT162646CTPVC is a 16-bit non-inverting bus transceiver and register with FCT-compatible CMOS outputs, 3.6 V tolerant inputs, and 56-pin SSOP package for backplane and memory-bus interfacing. From $2.00 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- 74FCT162646CTPVC Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 74FCT162646CTPVC?
- 16-bit non-inverting transceiver with integrated D-type register enables simultaneous latched and transparent data bus operation
- FCT CMOS outputs drive 25 mA with ±24 mA bus-hold circuitry, eliminating external pull-up or pull-down resistors
- 3.6 V input-tolerant design supports mixed 3.3 V and 5 V bus interfacing in CPLD and FPGA memory systems
What is 74FCT162646CTPVC used for?
The 74FCT162646CTPVC serves as a bidirectional data bus buffer in DSP memory systems, FPGA I/O expansion boards, and industrial backplane architectures requiring simultaneous 16-bit transceiver and register functions. Its non-inverting transparent and registered modes allow system designers to implement glitch-free address or data latching on heavily loaded PC-board buses running at frequencies up to 100 MHz. The part is also used in legacy VMEbus and CompactPCI systems where TTL-compatible driving strength and bus-hold features simplify board-level signal integrity design.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the 74FCT162646CTPVC datasheet?
74FCT162646CTPVC Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74FCT162646CTPVC?
Compatible alternatives and drop-in replacements for 74FCT162646CTPVC:
Registered Bus Transceiver, FCT Series, 16-Func, 8-Bit, True Output, CMOS, PDSO56
Registered Bus Transceiver, FCT Series, 2-Func, 8-Bit, True Output, CMOS, PDSO56
Registered Bus Transceiver, FCT Series, 2-Func, 8-Bit, True Output, CMOS, PDSO56
Frequently Asked Questions
How does the integrated register in 74FCT162646CTPVC differ from a plain 16-bit bus transceiver like 74FCT16245?
The 74FCT162646CTPVC combines transceiver and register functions in a single device, allowing the 16-bit data bus to be either passed transparently or latched into an internal D-type register on a clock edge. A plain 74FCT16245 can only buffer data bidirectionally without latching. This saves one additional 16-bit latch IC per bus segment and reduces PCB area by eliminating one SSOP-48 package, which is critical in density-constrained backplane designs.
What drive strength and bus-hold specifications does 74FCT162646CTPVC provide for driving heavily loaded backplane buses?
Each output of the 74FCT162646CTPVC can source or sink 25 mA of continuous current, sufficient to drive 20 to 30 standard TTL loads on a backplane trace. The on-chip bus-hold circuitry holds input pins at their last valid logic state with ±24 mA of holding current, removing the need for external 10 kΩ to 47 kΩ pull-up or pull-down resistors and simplifying PCB routing on 16-bit address and data buses.
Can 74FCT162646CTPVC interface directly between a 3.3 V FPGA I/O bank and a legacy 5 V TTL peripheral bus?
Yes. The 74FCT162646CTPVC features inputs tolerant to 3.6 V, and while its nominal supply is 5 V, the FCT CMOS input thresholds are TTL-compatible so a 3.3 V FPGA driving the control and data inputs will be correctly interpreted. The device's outputs swing to full 5 V TTL levels, allowing a 3.3 V FPGA to drive a 5 V legacy bus segment through the transceiver without requiring a separate level-translation IC. Designers should confirm that 3.3 V FPGA I/O pins are 5 V tolerant before connecting transceiver outputs back into the FPGA.
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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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