74ALVC164245ZQLR Texas Instruments Integrated Circuit (BGA) In Stock
74ALVC164245ZQLR is a 16-bit bidirectional bus transceiver from the ALVC family, bridging a 1.8 V or 2.5 V Port A to a 3.3 V to 5.5 V Port B with common control and 50 pF load support. It comes in a compact 56-ball VFBGA package for high-density PCB designs. Available from Texas Instruments with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- BGA
- Pin Count
- 56
- Lifecycle
- OBSOLETE
- Datasheet
- 74ALVC164245ZQLR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-supply architecture with Port A at 1.8 V or 2.5 V and Port B at 3.3 V to 5.5 V enables seamless voltage-level translation across mixed-voltage logic buses
- 16-bit bidirectional data path with common direction control simplifies interfacing wide data buses between processors and legacy 5 V peripherals
- ALVC-family high-speed switching supports bus frequencies beyond 100 MHz with propagation delays under 3 ns, suitable for high-bandwidth memory and processor interfaces
- 56-ball VFBGA package provides a compact 5 mm x 5 mm footprint for high-density designs where board space is at a premium
Applications
74ALVC164245ZQLR is designed for mixed-voltage PCB designs that bridge 1.8 V or 2.5 V processor I/O buses to 3.3 V or 5 V legacy peripherals such as FPGAs, CPLDs, or SRAM banks, eliminating the need for multiple single-bit level-shifter chains. Its 16-bit width makes it particularly efficient for address or data bus translation in embedded systems with parallel Flash, SRAM, or bus-connected FPGAs. The device also fits server and networking applications where backplane transceivers must translate between different supply-voltage domains at clock rates exceeding 100 MHz.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | ALSO REQUIRES 3.3V TO 5.5V SUPPLY FOR PORT B |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ALVC/VCX/A |
| JESD-30 Code | R-PBGA-B56 |
| JESD-609 Code | e1 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA56,6X10,25 |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 5.8ns |
| Propagation Delay (tpd) | 7.6ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN SILVER COPPER |
| Terminal Form | BALL |
| Terminal Pitch | 0.65mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | BGA |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does 74ALVC164245ZQLR handle voltage translation between a 1.8 V processor and 3.3 V SRAM on the same data bus?
74ALVC164245ZQLR uses its dual-supply architecture to accept 1.8 V logic levels on Port A and drive fully valid 3.3 V levels on Port B, or vice versa for bidirectional transfers. The 16-bit wide data path translates a full byte-wide or word-wide bus in a single IC, and with propagation delays under 3 ns at 3.3 V supply it supports SRAM read-access cycles as short as 10 ns, covering most asynchronous SRAM parts with 55 ns or faster access times.
What board-level advantage does the 56-ball VFBGA package of 74ALVC164245ZQLR offer over a flat-pack equivalent?
The VFBGA-56 package measures approximately 5 mm x 5 mm with a 0.5 mm ball pitch, occupying 60 to 70% less PCB area than an equivalent SSOP-56 flat-pack at 0.635 mm lead pitch. This footprint reduction is critical in handheld devices, laptop docking circuits, and high-density SoC peripheral boards where multiple bus-transceiver ICs must fit within a constrained region. The BGA's uniform thermal distribution also improves heat spreading at the 50 pF load switching frequencies above 100 MHz.
For a design where Port B must drive 5 V TTL legacy peripherals, is 74ALVC164245ZQLR suitable and what supply voltage is required?
Yes. Port B of 74ALVC164245ZQLR supports a supply range of 3.3 V to 5.5 V, allowing it to be powered from 5 V to generate output levels fully compatible with 5 V TTL peripherals requiring V_OH above 2.4 V. Port A remains at the low-voltage supply (1.8 V or 2.5 V), enabling direct connection to modern SoC I/O pads. The 5.5 V maximum on Port B ensures safe operation even with slight supply overshoot in 5 V industrial bus environments.
How does the common-control architecture of 74ALVC164245ZQLR simplify bus direction management compared to separate OE and DIR pins per nibble?
74ALVC164245ZQLR uses a single shared direction-control pin for all 16 bits, so the host processor asserts one GPIO to switch the entire bus from Port-A-to-B drive to Port-B-to-A drive in a single clock cycle. Devices with per-nibble or per-byte direction controls require 2 to 4 control signals and corresponding combinational glue logic, adding latency of 1 to 2 gate delays and at least 1 extra IC for wide buses. The common control reduces GPIO pin usage on the SoC by up to 3 pins in a 16-bit bus design.
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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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