74ABT162245DLR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments 74ABT162245DLR is a 16-bit dual-supply bus transceiver with non-inverting TTL logic in a 48-pin SSOP package. Features 3-state outputs, direction control, and 3.3 V to 5 V mixed-supply operation at up to 200 MHz. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- 74ABT162245DLR Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 74ABT162245DLR?
- 16-bit bidirectional transceiver with split 3.3 V / 5 V supply rails supporting direct voltage translation between legacy TTL and low-voltage logic domains
- 48-pin SSOP package with 3-state outputs and separate direction-control pins enabling full-duplex data bus isolation with contention-free switching
- ABT-family switching speed up to 200 MHz with 3.4 ns typical propagation delay for high-speed memory and processor bus bridging
What is 74ABT162245DLR used for?
The 74ABT162245DLR bridges 16-bit data buses between 3.3 V processors and 5 V peripheral logic in industrial computers, single-board computers, and legacy PCI interface cards. Its dual supply architecture allows designers to run the A-side at 3.3 V and the B-side at 5 V, eliminating level-translator ICs and reducing component count. High-speed backplane and FPGA I/O expansion boards also use this device to buffer 16-bit parallel data paths operating at 133 MHz memory bus speeds.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the 74ABT162245DLR datasheet?
74ABT162245DLR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74ABT162245DLR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does 74ABT162245DLR handle voltage translation between a 3.3 V processor bus and a 5 V peripheral?
The 74ABT162245DLR uses split VCCA and VCCB supply pins, allowing the A-port to operate at 3.3 V while the B-port runs at 5 V. This dual-rail design translates logic levels across all 16 bits simultaneously with 3.4 ns typical propagation delay, eliminating the need for separate level-shifter ICs on each data line.
In a high-speed memory subsystem running at 133 MHz, does 74ABT162245DLR meet the bus timing requirements?
Yes. The ABT family achieves propagation delay tpd of approximately 3.4 ns at 3.3 V, well within the 7.5 ns setup window of 133 MHz SDRAM interfaces. The 3-state output enable response time of 4.5 ns ensures safe bus release during DMA handoff cycles without glitch pulses on 16-bit data lines.
When upgrading from a 74ABT16245 to the 74ABT162245DLR in a compact PCB layout, what package size difference should designers expect?
Both devices use 48-pin SSOP, measuring approximately 12.8 mm x 5.3 mm footprint, so pad layout is pin-compatible and no board respin is needed. The 74ABT162245DLR adds separate OE and DIR control per 8-bit half-bus, giving finer enable granularity without increasing package size or pin count beyond 48 pins.
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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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