SN74AXC4T774BQB Texas Instruments Integrated Circuit (Other) In Stock
The SN74AXC4T774BQB is a 4-bit dual-supply bus transceiver supporting configurable voltage translation between 1.1 V and 3.6 V on each port. It features independent direction control per channel and tri-state outputs. Available in a compact QFN package for space-constrained mixed-voltage PCB designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- SN74AXC4T774BQB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74AXC4T774BQB?
- Configurable voltage translation between 1.1 V and 3.6 V on each port enabling flexible mixed-voltage bus interfacing
- Independent per-channel direction control allowing each of 4 bits to be set as input or output individually
- Tri-state outputs with dual-supply architecture supporting 1.8 V, 2.5 V, and 3.3 V logic families in one device
What is SN74AXC4T774BQB used for?
The SN74AXC4T774BQB is used in processor-to-FPGA interfaces where CPU I/O runs at 1.8 V and the FPGA bank operates at 3.3 V, requiring per-bit direction flexibility across 4 signals. It also fits LPDDR4 and eMMC board designs needing precise voltage translation between 1.1 V memory interfaces and 1.8 V controller logic. Its compact QFN footprint and wide 1.1 V to 3.6 V range make it a standard choice for mobile SoC reference designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74AXC4T774BQB datasheet?
SN74AXC4T774BQB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74AXC4T774BQB?
Compatible alternatives and drop-in replacements for SN74AXC4T774BQB:
Bus Transceiver, AXC Series, 1-Func, 4-Bit, True Output, CMOS, PQCC16
Frequently Asked Questions
What voltage translation range does the SN74AXC4T774BQB support on each port?
Each port of the SN74AXC4T774BQB independently supports supply voltages from 1.1 V to 3.6 V, allowing translation between 1.1 V LPDDR4, 1.8 V processor I/O, and 3.3 V peripheral logic without external resistor networks. This makes it suitable for modern multi-rail SoC platforms that mix multiple logic voltage domains across 4 signal channels.
How does independent direction control on the SN74AXC4T774BQB differ from a standard bidirectional bus transceiver?
A standard bus transceiver applies one direction-control signal to all 4 bits simultaneously. The SN74AXC4T774BQB provides independent direction control per channel, so each of the 4 bits can be individually set as an input or output. This is critical for mixed-signal buses like I2C or custom 4-wire protocols where data lines change direction independently at 1.8 V and 3.3 V levels.
In a PCB layout using the SN74AXC4T774BQB, what supply decoupling approach is recommended for the dual-supply ports?
Each supply pin should be decoupled with a 100 nF ceramic capacitor placed within 0.5 mm of the supply pin, and a 10 µF bulk capacitor per rail is recommended on the PCB plane. The two supply domains—VCCA and VCCB—must be independently routed, as the device switches between 1.1 V and 3.6 V rails simultaneously, and shared decoupling can cause coupling noise on the 4 translated output channels.
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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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