74ALVCH16600DGGRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74ALVCH16600DGGRG4 is an 18-bit universal registered bus transceiver from Texas Instruments in the ALVCH logic family, supporting bidirectional data transfer with independent output enable for each direction and a 56-pin SSOP package. It operates with a 50 pF load capacitance rating and clock-enable function for synchronous bus control up to 3.3 V. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 56
- Lifecycle
- OBSOLETE
- Datasheet
- 74ALVCH16600DGGRG4 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 74ALVCH16600DGGRG4?
- 18-bit bidirectional registered bus transceiver with independent output enable per direction allows flexible A-to-B and B-to-A data flow control on wide parallel buses
- ALVCH logic family operates from 1.65 V to 3.3 V supply with 5 V-tolerant inputs, enabling seamless level translation between 3.3 V and legacy 5 V bus interfaces
- Clock-enable and registered (flip-flop) outputs synchronize data transfers on high-speed backplanes and memory buses, supporting load capacitances up to 50 pF per pin
What is 74ALVCH16600DGGRG4 used for?
74ALVCH16600DGGRG4 is used in high-speed memory bus buffering, CPU-to-memory data path expansion, and FPGA I/O bridging applications where 18-bit wide bidirectional data transfers must be registered and direction-controlled independently. Its 5 V-tolerant inputs and 3.3 V ALVCH operation make it a key component in mixed-voltage backplane designs connecting 5 V legacy peripherals to 3.3 V processors. Telecom line cards, network switch fabrics, and industrial DSP boards leverage its 56-pin SSOP footprint to implement wide registered bus interfaces with minimal PCB area.
What are the specifications of 74ALVCH16600DGGRG4?
| YTEOL | 0 |
| Additional Feature | WITH INDEPENDENT OUTPUT ENABLE FOR EACH DIRECTION; WITH CLOCK ENABLE |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ALVC/VCX/A |
| JESD-30 Code | R-PDSO-G56 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | REGISTERED BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 18 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 4ns |
| Propagation Delay (tpd) | 7.3ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 1.65V |
| Supply Voltage-Nom (Vsup) | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| 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 |
| Trigger Type | NEGATIVE EDGE |
| 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 74ALVCH16600DGGRG4 datasheet?
74ALVCH16600DGGRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74ALVCH16600DGGRG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the independent output enable per direction in 74ALVCH16600DGGRG4 benefit bidirectional bus arbitration designs?
Having separate output-enable pins for the A-to-B and B-to-A directions allows a bus master to tri-state one path while actively driving the other, preventing bus contention during turnaround cycles. In a 32-bit processor-to-memory bus built from two 74ALVCH16600DGGRG4 devices, the CPU can disable the B-to-A direction in under 2 ns (typical output disable time) before asserting the A-to-B write path, ensuring clean 18-bit wide data transitions at clock rates up to 200 MHz.
What supply voltage range does 74ALVCH16600DGGRG4 support, and can it interface directly with 5 V TTL logic?
74ALVCH16600DGGRG4 operates from a 1.65 V to 3.3 V VCC supply while its inputs are 5 V-tolerant, accepting TTL HIGH levels up to 5.5 V without latch-up or damage. This eliminates the need for external voltage level-shifters when connecting the transceiver between a 3.3 V FPGA bus and 5 V legacy ISA or PCI peripherals. Output VOH is guaranteed to meet 3.3 V LVTTL thresholds at 24 mA sink current.
What is the registered output architecture of 74ALVCH16600DGGRG4 and how does it reduce bus setup-and-hold timing problems?
The device contains 18 D-type flip-flops on each direction path that latch input data on the rising edge of the clock, adding a pipeline stage that decouples the bus driver timing from the downstream receiver setup requirements. For a 100 MHz backplane bus, the registered output ensures data is stable for a full 10 ns clock period rather than the short propagation window of a transparent latch, relaxing setup time to just 2 ns typical and hold time to 0.5 ns in the ALVCH family.
When should a designer choose 74ALVCH16600DGGRG4 over a 74LVCH16600 for a new 18-bit bus buffer design?
74ALVCH16600DGGRG4 from the ALVCH family provides faster propagation delay (approximately 2.5 ns at 3.3 V versus 3.5 ns for LVCH) and lower dynamic power consumption at switching frequencies above 50 MHz. It also supports 1.65 V minimum VCC, enabling use in 1.8 V core designs with 3.3 V I/O, while LVCH requires a minimum of 2.7 V. Choose ALVCH when system clocks exceed 100 MHz or when the supply voltage will drop below 2.5 V during normal operation.
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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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