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Texas Instruments 74AHC16240DGGRG4
- Part No.:
- 74AHC16240DGGRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74AHC16240DGGRG4.pdf
- Description:
- IC BUFFER INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,291
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Product details
Overview
74AHC16240DGGRG4 from Texas Instruments is a 16-bit inverting buffer/driver with 3-state outputs, designed for memory address and bus interface applications. It operates from 2 V to 5.5 V, supports symmetrical active-low output-enable inputs, and delivers ±8 mA output drive at 5 V. Its flow-through pinout minimizes PCB trace congestion in high-density data paths.
For engineers reviewing the 74AHC16240DGGRG4 datasheet, 74AHC16240DGGRG4 pinout, 74AHC16240DGGRG4 application, or 74AHC16240DGGRG4 equivalent, this page provides verified functional identity, package mapping to TSSOP-48, confirmed DC/AC electrical specs, thermal resistance (θJA = 70°C/W), and two validated alternative parts for bus buffering in industrial control and embedded systems.
Technical Context
The 74AHC16240DGGRG4 implements four independent 4-bit inverting buffers, each with dedicated active-low OE control. Its EPIC™ CMOS process enables rail-to-rail output swing and low dynamic power dissipation (Cpd = 10 pF at 5 V).
It features distributed VCC/GND pins per quadrant to suppress simultaneous switching noise, and latch-up immunity exceeding 250 mA per JESD 17 - critical for robust operation in mixed-signal environments with shared power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports dual-supply systems and legacy 3.3 V/5 V mixed-voltage buses |
| IOH/IOL | ±8 mA at VCC = 5 V - sufficient to drive 50-pF loads with <6.5 ns propagation delay |
| tPLH/tPHL | 3.6 ns min / 6 ns max (VCC = 5 V, CL = 15 pF) - ensures timing compliance in 100+ MHz address/data strobing |
| θJA | 70°C/W - defines thermal derating limit for continuous 48-pin TSSOP operation at ambient ≤85°C |
| Input Thresholds | VIH = 3.85 V, VIL = 1.65 V at VCC = 5.5 V - guarantees noise margin >0.7 V under worst-case supply tolerance |
| 3-State Leakage | IOZ ≤ ±2.5 µA at VCC = 5.5 V - prevents unintended loading of high-impedance buses during disable |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.1 mm × 1.2 mm body, 0.5 mm pitch, JEDEC MO-153 compliant, lead-free NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Independent control per 4-bit section; must be pulled high via resistor during power-up to ensure Hi-Z state |
| 1A1–4A4 (pins 47,46,44,43,41,40,38,37,36,35,33,32,30,29,27,26) | Buffer input | 16 logic inputs grouped into four 4-bit banks; no internal termination required |
| 1Y1–4Y4 (pins 2,3,5,6,8,9,11,12,13,14,16,17,19,20,22,23) | Inverting buffered output | 16 complementary outputs with symmetrical rise/fall times and ±25 mA absolute max current rating |
| VCC (pins 7,21,34,45) | Power supply | Distributed across package quadrants to reduce IR drop and ground bounce in high-speed switching |
| GND (pins 4,10,15,24,31,39,42,47) | Ground reference | Eight GND pins minimize return path inductance and improve signal integrity on dense PCBs |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins aligned on opposite sides of package - eliminates layer jumps and reduces trace length by up to 40% in bus routing |
| Distributed power/ground | Four VCC and eight GND pins - lowers simultaneous switching noise (SSN) by decoupling local current loops per functional quadrant |
| EPIC™ CMOS process | Sub-10 ns propagation with <10 µA ICC quiescent current - enables low-power operation without sacrificing speed in battery-backed systems |
| Latch-up immunity | >250 mA per JESD 17 - ensures robustness against transient overcurrent events in industrial motor-control I/O modules |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
Use Scenario: Driving 16-bit address lines from an MCU to SRAM or Flash memory in programmable logic controllers. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating processor address bus from memory array; enables multi-drop addressing with OE-controlled contention avoidance. Use Value: Ensures setup/hold timing margins with tPLH ≤ 6 ns and VIH/VIL thresholds compatible with 5 V TTL and 3.3 V LVTTL logic families. | Use Scenario: Level-shifting and driving CAN or RS-485 transceiver enable signals in factory automation gateways. IC Role / Device Role / Timing Role: Signal conditioning buffer between microcontroller GPIO and isolated bus driver ICs; provides current gain and noise immunity. Use Value: ±8 mA drive capability sustains fast edge rates into capacitive transceiver inputs while distributed GND pins suppress EMI coupling. |
| Test Equipment Backplane | Embedded Display Interface |
Use Scenario: Routing parallel pixel data and control signals from FPGA video controller to LCD timing controller in automated test fixtures. IC Role / Device Role / Timing Role: 16-bit bidirectional bus driver (with external direction control) managing pixel clock domain crossing and slew rate control. Use Value: 50-pF load support with tPZH/tPHZ ≤ 8.5 ns ensures reliable sampling at 25 MHz pixel clocks without added termination. | Use Scenario: Interfacing ARM Cortex-M7 parallel RGB interface to 16-bit TFT display module in medical handheld devices. IC Role / Device Role / Timing Role: Voltage-level translation and fanout expansion for RGB data lines and HSYNC/VSYNC control signals. Use Value: 2–5.5 V VCC range matches both core logic (3.3 V) and display IO (5 V), eliminating need for discrete level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16240ADGGR | Lower VCC range (1.65–3.6 V); higher IOL (24 mA); faster tPLH (2.5 ns @ 3.3 V) | Optimized for 3.3 V-only systems; not suitable for 5 V buses or mixed-voltage designs | Select when operating exclusively at 3.3 V and requiring tighter timing margins or higher drive strength |
| 74ALVC16240DGGR | Same VCC range (1.65–3.6 V); lower ICC (10 µA typ); identical pinout but different logic family | Targeted at ultra-low-power portable instrumentation; lacks 5 V tolerance and fails at VCC > 3.6 V | Choose only for battery-powered applications where 5 V compatibility is unnecessary and standby current is critical |
Compared with SN74LVC16240ADGGR and 74ALVC16240DGGR, the 74AHC16240DGGRG4 uniquely supports 5 V operation and maintains full 2–5.5 V compatibility - making it the sole option among these three for legacy 5 V systems, mixed-voltage backplanes, or designs requiring guaranteed interoperability with TTL-level peripherals.
Availability
74AHC16240DGGRG4 is available at Aetrix Electronics and suitable for industrial control panels, test equipment backplanes, and embedded display interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74AHC16240DGGRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of heritage in high-reliability logic families.
The AHC logic family - including the 74AHC16240DGGRG4 - was engineered for high-speed, low-noise bus interfacing in industrial and automotive systems where 5 V tolerance, latch-up immunity, and predictable timing are mandatory.
FAQ
What is the maximum operating temperature for the 74AHC16240DGGRG4?
The 74AHC16240DGGRG4 is rated for operation from –40°C to +85°C, matching the commercial-grade SN74AHC16240 specification. This range supports deployment in industrial enclosures, factory-floor HMIs, and outdoor kiosk electronics without derating. The device uses TI's EPIC™ process to maintain parameter stability across this full span, with guaranteed VOL ≤ 0.5 V and VOH ≥ 4.4 V at 85°C and VCC = 4.5 V.
Does the 74AHC16240DGGRG4 support 3.3 V logic levels?
Yes, the 74AHC16240DGGRG4 fully supports 3.3 V operation: its VCC range is 2 V to 5.5 V, and input thresholds scale with supply voltage (e.g., VIL = 0.9 V, VIH = 2.1 V at VCC = 3 V). At 3.3 V, it delivers tPLH ≤ 8.4 ns and ±4 mA output drive - making it interoperable with LVTTL, LVCMOS, and mixed 3.3 V/5 V systems without level shifters.
How should unused inputs be handled on the 74AHC16240DGGRG4?
All unused inputs on the 74AHC16240DGGRG4 must be tied to either VCC or GND to prevent floating nodes that cause excessive ICC, noise coupling, or erratic output behavior. TI's application report SCBA004 explicitly recommends hard-wiring unused A and OE inputs - never leaving them open. For OE pins, tie to VCC via a pullup resistor (value determined by driver sink capability) to guarantee Hi-Z state at power-up.
What is the thermal resistance θJA of the 74AHC16240DGGRG4 package?
For the 74AHC16240DGGRG4 in its TSSOP-48 (DGG) package, the junction-to-ambient thermal resistance θJA is 70°C/W under standard JEDEC test conditions (1-layer board, 1 in² copper pad). This value governs safe power dissipation limits: at 85°C ambient, maximum allowable PD is ~0.71 W before junction temperature exceeds 150°C. Layout best practices include using internal GND planes and thermal vias to approach this spec.
Is the 74AHC16240DGGRG4 pin-compatible with other Widebus™ 16-bit buffers?
Yes - the 74AHC16240DGGRG4 shares identical pinout, footprint, and function with SN74AHC16240 variants in DGG, DGV, and DL packages (e.g., SN74AHC16240DGVR, SN74AHC16240DL). All use the same 48-pin flow-through arrangement, VCC/GND distribution, and OE/A/Y signal mapping. However, it is not pin-compatible with non-AHC family members like LVC or ALVC versions due to differing input threshold definitions and absolute maximum ratings.
74AHC16240DGGRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74AHC16240DGGRG4 FAQ
1.How can I place an order for 74AHC16240DGGRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC16240DGGRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74AHC16240DGGRG4 reliable?
The price and inventory of 74AHC16240DGGRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC16240DGGRG4 is usually 5 days.
3.What payment methods are accepted for 74AHC16240DGGRG4?
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4.How is shipping managed for 74AHC16240DGGRG4?
74AHC16240DGGRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC16240DGGRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74AHC16240DGGRG4?
For technical support, including 74AHC16240DGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC16240DGGRG4 requirements.
6.How does Aetrix verify that 74AHC16240DGGRG4 is sourced from the original manufacturer or authorized distributors?
All 74AHC16240DGGRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHC16240DGGRG4 meets industry standards.
7.What is the process for return or replacement of 74AHC16240DGGRG4?
All 74AHC16240DGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC16240DGGRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74AHC16240DGGRG4 part is unused and in its original packaging.
Return procedure for 74AHC16240DGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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