74ALB16245DGGRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74ALB16245DGGRE4 is a 16-bit bidirectional WIDEBUS transceiver with direction control from the ALB logic family. It handles 50 pF load capacitance per channel in a 48-pin TSSOP package for high-density board-to-board bus bridging. Suitable for memory interface, FPGA I/O expansion, and backplane data bus applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 48
- Lifecycle
- OBSOLETE
- Datasheet
- 74ALB16245DGGRE4 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
What are the key features of 74ALB16245DGGRE4?
- 16-bit bidirectional bus transceiver with common direction control for simultaneous A-to-B or B-to-A data transfer
- ALB logic family supports mixed-voltage bus bridging with high drive strength for 50 pF capacitive loads per channel
- 48-pin TSSOP WIDEBUS package enables 16-bit-wide bus interfacing in a compact surface-mount footprint
What is 74ALB16245DGGRE4 used for?
The 74ALB16245DGGRE4 is used in memory bus interfaces, FPGA I/O expansion boards, and backplane transceiver applications requiring 16-bit bidirectional data flow with direction control. Its WIDEBUS architecture enables high-bandwidth data transfers between processor buses and peripheral devices operating at standard logic voltage levels. The ALB family drive strength and 50 pF load capacity make it well-suited for heavily loaded PCB traces in embedded computing and industrial computing modules.
What are the specifications of 74ALB16245DGGRE4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ALB |
| JESD-30 Code | R-PDSO-G48 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.025A |
| 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 | TSSOP48,.3,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 5.6mA |
| Prop. Delay@Nom-Sup | 2ns |
| Propagation Delay (tpd) | 2ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the 74ALB16245DGGRE4 datasheet?
74ALB16245DGGRE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74ALB16245DGGRE4?
Compatible alternatives and drop-in replacements for 74ALB16245DGGRE4:
Bus Transceiver, ALB Series, 2-Func, 8-Bit, True Output, BICMOS, PDSO48
Frequently Asked Questions
What is the bus width of 74ALB16245DGGRE4 and how does it compare to 8-bit transceiver alternatives?
The 74ALB16245DGGRE4 is a 16-bit transceiver, providing twice the data path width of classic 8-bit 74xx245 transceivers in a single 48-pin TSSOP package. This doubles bus throughput per IC slot versus using two 8-bit transceivers, reducing the component count by 1 IC and saving roughly 40 mm² of PCB area in 16-bit memory bus designs.
How does the direction control of 74ALB16245DGGRE4 work and can each byte lane be independently controlled?
The 74ALB16245DGGRE4 uses a common direction control input (DIR) that switches all 16 bits simultaneously between A-to-B and B-to-A transfer modes, rather than independent per-nibble control. This common control simplifies bus arbitration logic: a single MCU GPIO pin manages the full 16-bit direction, reducing address decoder complexity in 16-bit wide memory interface designs operating at 3.3 V.
What load capacitance does each output of 74ALB16245DGGRE4 handle and what bus trace lengths does this support?
Each output driver of 74ALB16245DGGRE4 is characterized at 50 pF load capacitance, sufficient for driving PCB traces up to approximately 10 cm at standard FR-4 trace capacitance of about 1.5 pF/cm. For backplane applications with longer traces, an additional series termination resistor of 22 Ω to 33 Ω limits overshoot while maintaining signal integrity at bus frequencies up to 50 MHz.
In which mixed-voltage system scenarios is the ALB-family 74ALB16245DGGRE4 preferable over ABT or LVC transceivers?
The 74ALB16245DGGRE4 ALB family provides higher output drive current than LVC and better mixed-voltage tolerance than ABT, making it preferable in 3.3 V bus systems where 5 V-tolerant inputs and strong output drive are needed simultaneously. In systems bridging a 5 V legacy peripheral bus to a 3.3 V FPGA I/O bank with 16-bit data width, ALB transceivers sustain correct logic levels at 50 pF over the full industrial temperature range of -40°C to +85°C.
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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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