74AHC16540DGVRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74AHC16540DGVRE4 is a 16-bit inverting buffer and line driver from Texas Instruments with 3-state outputs, dual active-low output enables, and AHC-logic speed in a 48-pin TSSOP package for high-speed bus driving applications. From $1.20 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 48
- Lifecycle
- OBSOLETE
- Datasheet
- 74AHC16540DGVRE4 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 74AHC16540DGVRE4?
- 16-bit inverting bus driver with dual independent active-low output enable pins, allowing two 8-bit buses to be independently controlled from a single device
- AHC (Advanced High-speed CMOS) logic family delivering fast propagation delays under 6 ns while maintaining low power consumption on 3.3 V or 5 V supplies
- 3-state outputs with 8 mA sink current enabling connection to shared data buses without bus contention when the device is not driving
- 48-pin TSSOP (DGVR) fine-pitch package minimizing PCB footprint for dense multi-bus interface boards and memory expansion designs
- E4 halogen-free and RoHS-compliant packaging meeting modern environmental requirements for consumer and industrial electronics manufacturing
What is 74AHC16540DGVRE4 used for?
74AHC16540DGVRE4 is used in address and data bus buffering on microprocessor boards where 16-bit parallel buses must be driven across long PCB traces or through connectors with capacitive loading above 50 pF. It is well suited for FPGA I/O expansion designs where dual 8-bit bus segments need independent enable control to isolate subsystem data paths. The AHC speed grade also makes it appropriate for memory interface boards where bus turnaround times under 10 ns are necessary for high-frequency SRAM or FIFO access.
What are the specifications of 74AHC16540DGVRE4?
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | WITH DUAL OUTPUT ENABLE |
| Control Type | ENABLE LOW |
| Family | AHC/VHC/H/U/V |
| JESD-30 Code | R-PDSO-G48 |
| JESD-609 Code | e4 |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP48,.25,16 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 8.5ns |
| Propagation Delay (tpd) | 10ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.4mm |
| 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 74AHC16540DGVRE4 datasheet?
74AHC16540DGVRE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74AHC16540DGVRE4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How wide is the data bus that 74AHC16540DGVRE4 can drive, and how are the outputs organized?
74AHC16540DGVRE4 drives a 16-bit wide data bus, organized as two independent 8-bit banks each controlled by its own active-low output enable pin. This dual-bank structure allows the device to serve two separate 8-bit buses simultaneously or to selectively tri-state one bank while the other drives, a key advantage in split-bus or mux-demux backplane designs.
What logic family does 74AHC16540DGVRE4 belong to, and how fast are its outputs?
74AHC16540DGVRE4 belongs to the AHC (Advanced High-speed CMOS) logic family, which combines CMOS low-power consumption with propagation delays typically under 6 ns at 3.3 V. This speed is approximately 3 times faster than standard HC logic (18 ns typical) and enables reliable bus operation at clock rates above 100 MHz in buffered memory or peripheral interface applications.
Can 74AHC16540DGVRE4 drive multiple memory chips in parallel on a shared address bus?
Yes, 74AHC16540DGVRE4 can drive multiple memory chips in parallel. Each 3-state output sinks up to 8 mA and sources comparable current, sufficient to charge the combined input capacitance of 4 to 8 standard CMOS memory devices (each with 5 pF–10 pF input capacitance) within a 6 ns propagation budget. For heavier loads exceeding 50 pF total, an additional series termination resistor of 22 ohm to 33 ohm is recommended to suppress ringing.
Which package does 74AHC16540DGVRE4 use, and what are the key differences from a DIP equivalent?
74AHC16540DGVRE4 uses a 48-pin TSSOP (Thin Shrink Small Outline Package) with 0.5 mm pitch, occupying roughly 70% less board area than a comparable 48-pin DIP package. The TSSOP is SMT-only, so it requires a reflow soldering process; however, the reduced parasitic inductance from the shorter leads improves signal integrity at frequencies above 50 MHz compared to through-hole DIP alternatives.
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Why Buy from FindMyChip
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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