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Texas Instruments 74AHCT16244DGGRG4
- Part No.:
- 74AHCT16244DGGRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74AHCT16244DGGRG4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
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Product details
Overview
74AHCT16244DGGRG4 from Texas Instruments is a 16-bit noninverting 3-state buffer/driver with four independent 4-bit sections, TTL-compatible inputs (VIH = 2 V, VIL = 0.8 V), 5-V supply operation, and ±25 mA output drive capability. It enables high-density bus interfacing in memory address, clock distribution, and peripheral I/O applications where controlled signal isolation and noise-immune edge rates are required.
For engineers reviewing the 74AHCT16244DGGRG4 datasheet, 74AHCT16244DGGRG4 pinout, 74AHCT16244DGGRG4 application, or 74AHCT16244DGGRG4 equivalent, this device supports voltage translation from 3.3-V logic to 5-V buses, features distributed VCC/GND pins to suppress switching noise, and delivers guaranteed tPLH/tPHL ≤ 10.5 ns (CL = 15 pF) across –40°C to 125°C.
Technical Context
The 74AHCT16244DGGRG4 implements four independent 4-bit noninverting buffers, each with an active-low output-enable (OE) input controlling all four outputs simultaneously. Its EPIC™ CMOS process ensures TTL-level input compatibility while maintaining 5-V CMOS output swing and latch-up immunity exceeding 250 mA per JESD17.
Each buffer section operates with symmetrical drive strength (IOH/IOH = –8 mA / 8 mA at VCC = 4.5 V), slow edge-rate control to minimize ringing, and input overvoltage tolerance up to 5.5 V. The TSSOP-48 package integrates 12 dedicated GND and 6 VCC pins to reduce ground bounce and power rail disturbance during high-speed switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation across industrial-grade 5-V rails with ±10% tolerance. |
| Input Voltage Thresholds | VIH = 2 V, VIL = 0.8 V - Guarantees reliable recognition of 3.3-V TTL logic levels without level shifters. |
| Output Drive | ±25 mA per output - Supports direct driving of multiple CMOS loads or moderate-current peripherals. |
| Propagation Delay | tPLH/tPHL ≤ 10.5 ns (CL = 15 pF) - Enables timing-critical bus buffering at >50 MHz data rates. |
| Operating Temperature | –40°C to +125°C - Qualified for automotive under-hood, industrial motor control, and telecom infrastructure environments. |
| ESD Protection | ≥2000 V HBM - Meets MIL-STD-883 Method 3015 for robust handling in automated assembly lines. |
| Power Dissipation | Cpd = 8.2 pF - Low dynamic power consumption ideal for high-pin-count, low-duty-cycle bus interfaces. |
Pinout & Package
TSSOP-48 package (body size 12.50 mm × 6.10 mm, 1.2 mm max height) with exposed pad not electrically connected; 48-pin layout optimized for flow-through PCB routing and minimal trace stubs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Independent control of each 4-bit buffer group; must be pulled high via resistor during power-up to ensure Hi-Z state. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Buffer input | TTL-compatible inputs accepting 0–5.5 V; unused inputs must be tied to VCC or GND to prevent floating states. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Noninverting 3-state output | True outputs with symmetrical sourcing/sinking; high-impedance when corresponding OE is high. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed 5-V supply connections reduce simultaneous switching noise and improve PSRR. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight dedicated ground pins provide low-inductance return paths and minimize ground bounce in multi-bit switching. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pin architecture | Input-to-output signal path aligned left-to-right across package, enabling straight PCB trace routing and reduced crosstalk. |
| Distributed VCC/GND pinning | 6 VCC and 8 GND pins interleaved across 48-pin array suppress power rail collapse during 16-bit parallel switching. |
| Slow edge-rate control | Controlled dV/dt minimizes overshoot/undershoot on unterminated transmission lines, reducing EMI and signal integrity risk. |
| EPIC™ CMOS process | Enhanced-performance implanted CMOS delivers latch-up immunity >250 mA and stable operation at 125°C junction temperature. |
| TTL-input compatibility | Accepts standard 3.3-V LVTTL logic levels (VIH ≥ 2 V, VIL ≤ 0.8 V) without external biasing or level-shifting circuitry. |
Applications
| Telecom Infrastructure Backplane Buffers | Industrial PLC I/O Expansion Modules |
|---|---|
Use Scenario: Buffering address/data lines between FPGA-based control logic and hot-swap-capable backplane connectors in 4G/LTE base station line cards. IC Role / Device Role / Timing Role: 16-bit unidirectional bus driver isolating FPGA I/O from noisy backplane transients while preserving setup/hold timing margins. Use Value: Distributed VCC/GND pins and slow edge rates suppress coupling into adjacent high-speed SerDes lanes, meeting IEC 61000-4-2 Level 4 ESD immunity requirements. |
Use Scenario: Interfacing microcontroller GPIO banks to opto-isolated digital input/output terminals in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Level-translating buffer converting 3.3-V MCU signals to 5-V industrial fieldbus logic levels with precise 3-state control per I/O group. Use Value: TTL-compatible inputs eliminate external pull-up resistors; ±25 mA drive supports direct connection to LED status indicators and relay drivers. |
| Medical Imaging Data Acquisition Interfaces | Automotive Body Control Module Bus Isolation |
Use Scenario: Driving parallel ADC/DAC control buses in portable ultrasound systems where EMI-sensitive analog front-ends coexist with digital processing subsystems. IC Role / Device Role / Timing Role: Noise-suppressing buffer decoupling high-speed digital control signals from analog sensor signal chains using controlled-edge 3-state outputs. Use Value: Low Cpd (8.2 pF) and minimized ground bounce ensure <1 LSB error contribution in 16-bit medical ADC sampling windows. |
Use Scenario: Isolating CAN controller I/O from body electronics sub-buses (e.g., lighting, HVAC) in centralized vehicle ECUs to prevent fault propagation. IC Role / Device Role / Timing Role: Directional signal conditioner providing galvanic separation between microcontroller peripherals and external load drivers via 3-state enable control. Use Value: –40°C to 125°C rating and latch-up immunity >250 mA ensure reliability in under-hood thermal cycling and load-dump transient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT16244DGVR | TVSOP-48 package (9.70 mm × 4.40 mm); identical electrical specs and pinout; thinner profile (1.0 mm max height). | Preferred for space-constrained PCBs requiring lower component height; same thermal resistance (RθJA = 83.5°C/W) but smaller footprint. | Select DGVR when board height budget is <1.2 mm or when finer-pitch assembly is required; no layout change needed. |
| SN74AHCT16244DLR | SSOP-48 package (15.80 mm × 7.50 mm); identical functionality; higher RθJA (64.6°C/W) due to larger thermal mass. | Better suited for high-reliability industrial applications with extended thermal cycling; compatible with legacy SSOP footprints. | Choose DLR for legacy designs or where mechanical robustness and moisture resistance outweigh size constraints. |
Compared with 74AHCT16244DGGRG4, the DGVR offers identical performance in a lower-profile package ideal for ultra-thin systems, while the DLR provides enhanced thermal stability and legacy compatibility at the cost of board area - both retain full pin-for-pin and functional equivalence.
Availability
74AHCT16244DGGRG4 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical imaging systems requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant sourcing.
Supply support for 74AHCT16244DGGRG4 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 expertise in high-reliability interface ICs for industrial and automotive markets.
The SN74AHCT16244 product line targets high-density, noise-immune bus interfacing in memory, clock, and peripheral subsystems - engineered specifically for applications demanding TTL compatibility, wide temperature operation, and controlled signal integrity.
FAQ
What is the maximum operating temperature range for the 74AHCT16244DGGRG4?
The 74AHCT16244DGGRG4 is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics guaranteed across this full industrial/automotive range. This includes validated performance of VOH/VOL, propagation delay, and output drive strength at both extremes, making it suitable for under-hood automotive modules and outdoor telecom equipment.
Does the 74AHCT16244DGGRG4 require external pull-up resistors on its OE pins?
Yes - to ensure a defined high-impedance (Hi-Z) state during power-up and power-down sequences, each OE pin (1OE–4OE) of the 74AHCT16244DGGRG4 must be tied to VCC through an external pull-up resistor. The minimum resistance value depends on the current-sinking capability of the driving source, typically 10 kΩ for standard logic control.
Can the 74AHCT16244DGGRG4 safely interface 3.3-V microcontrollers with 5-V peripherals?
Yes - the 74AHCT16244DGGRG4 accepts TTL-compatible input voltages (VIH ≥ 2 V, VIL ≤ 0.8 V), allowing direct connection to 3.3-V LVTTL outputs without level shifters. Its 5-V CMOS outputs then drive 5-V peripherals with full logic swing and ±25 mA capability, enabling robust voltage translation in mixed-supply systems.
How many ground and power pins does the 74AHCT16244DGGRG4 have in its TSSOP-48 package?
The 74AHCT16244DGGRG4 in TSSOP-48 has eight dedicated GND pins (pins 4, 10, 15, 21, 28, 34, 39, 45) and six VCC pins (pins 7, 18, 31, 42, plus two additional VCC locations per TI package drawing). This distributed power/ground architecture minimizes simultaneous switching noise and improves signal integrity in high-speed 16-bit bus applications.
Is the 74AHCT16244DGGRG4 pin-compatible with other members of the SN74AHCT16xxx family?
No - the 74AHCT16244DGGRG4 is functionally and physically distinct from other SN74AHCT16xxx variants (e.g., SN74AHCT16245, SN74AHCT16373). While all share the TSSOP-48 footprint, pin assignments differ significantly: the 74AHCT16244DGGRG4 has four independent 4-bit noninverting buffers with active-low OE per group, whereas others implement transceivers or latches with different I/O configurations and control logic.
74AHCT16244DGGRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74AHCT16244DGGRG4 FAQ
1.How can I place an order for 74AHCT16244DGGRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT16244DGGRG4 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 74AHCT16244DGGRG4 reliable?
The price and inventory of 74AHCT16244DGGRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT16244DGGRG4 is usually 5 days.
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74AHCT16244DGGRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT16244DGGRG4 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 74AHCT16244DGGRG4?
For technical support, including 74AHCT16244DGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT16244DGGRG4 requirements.
6.How does Aetrix verify that 74AHCT16244DGGRG4 is sourced from the original manufacturer or authorized distributors?
All 74AHCT16244DGGRG4 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 74AHCT16244DGGRG4 meets industry standards.
7.What is the process for return or replacement of 74AHCT16244DGGRG4?
All 74AHCT16244DGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT16244DGGRG4, 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 74AHCT16244DGGRG4 part is unused and in its original packaging.
Return procedure for 74AHCT16244DGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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