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Texas Instruments 74AHCT16244DGGRE4
- Part No.:
- 74AHCT16244DGGRE4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74AHCT16244DGGRE4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,184
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Product details
Overview
74AHCT16244DGGRE4 from Texas Instruments is a 16-bit noninverting 3-state buffer/driver IC with four independent 4-bit sections, TTL-compatible inputs (VIH = 2 V, VIL = 0.8 V), 5 V supply operation, ±25 mA output drive per channel, and propagation delay of 5.4 ns (CL = 15 pF) - used in memory address buffering, bus interfacing, and level translation between 3.3 V logic and 5 V systems.
For engineers reviewing the 74AHCT16244DGGRE4 datasheet, 74AHCT16244DGGRE4 pinout, 74AHCT16244DGGRE4 application, or 74AHCT16244DGGRE4 equivalent, this device supports high-density PCB layout via flow-through architecture, distributed VCC/GND pins to suppress switching noise, and latch-up immunity exceeding 250 mA per JESD17 - critical for telecom infrastructure and industrial embedded bus drivers.
Technical Context
The 74AHCT16244DGGRE4 implements four independent 4-bit noninverting buffers, each with an active-low 3-state output-enable (OE) input. Its EPIC™ CMOS process ensures TTL-voltage compatibility while maintaining 5 V rail operation and symmetrical drive strength (IOH/IOH = –8/+8 mA at VCC = 4.5–5.5 V).
It features slow edge-rate control to minimize output ringing, overvoltage-tolerant inputs (up to 5.5 V), and distributed power/ground pins across the 48-pin TSSOP package to reduce simultaneous switching noise - enabling stable operation in high-speed bus environments up to 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - enables robust operation across industrial 5 V rails with ±10% tolerance. |
| Input Compatibility | TTL-level (VIH ≥ 2 V, VIL ≤ 0.8 V) - allows direct interface with legacy 3.3 V and 5 V logic without level shifters. |
| Output Drive | ±25 mA per output - sufficient for driving multiple CMOS loads or short traces on backplanes. |
| Propagation Delay | 5.4 ns (min) / 10.5 ns (max) at CL = 15 pF - supports >50 MHz bus timing with margin. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature industrial and automotive under-hood applications. |
| ESD Protection | 2000 V HBM - meets MIL-STD-883 Class 3A requirements for handling in automated assembly. |
| Latch-Up Immunity | >250 mA per JESD17 - prevents destructive failure during transient overcurrent events. |
Pinout & Package
TSSOP-48 (DGG) package: 12.50 mm × 6.10 mm body, 0.5 mm pitch, 1.2 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow, unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low 3-state enable | Controls corresponding 4-bit buffer section; tie to VCC via pullup for power-up high-Z state. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Buffer inputs | True-input channels; TTL-compatible, overvoltage-tolerant up to 5.5 V. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Noninverting buffered outputs | 3-state outputs with ±25 mA drive; high-Z when OE asserted. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed 5 V supply connections minimize IR drop and improve noise immunity. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight dedicated GND pins reduce ground bounce and support clean signal return paths. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input-to-output signal path runs linearly across package - simplifies layer routing and reduces trace crossovers. |
| Distributed VCC/GND | Four VCC and eight GND pins placed strategically - lowers impedance of power delivery network and suppresses SSN. |
| Slow edge-rate control | Controlled slew minimizes overshoot/undershoot - eliminates need for external series termination on most loads. |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V regardless of VCC - enables safe interfacing with mixed-voltage systems and hot-swap scenarios. |
| EPIC™ CMOS process | Enhanced performance implantation delivers TTL compatibility with low static current (ICC ≤ 40 µA) and high noise margin. |
Applications
| Telecom Infrastructure | Industrial Bus Interface |
|---|---|
Use Scenario: Driving address/data lines between FPGA and SRAM in base station control cards. IC Role / Device Role / Timing Role: 16-bit noninverting buffer with 3-state control for bidirectional bus isolation and timing-critical address latching. Use Value: Flow-through pinout reduces trace length mismatch; 5.4 ns tPLH ensures setup/hold compliance at 66 MHz clock rates. |
Use Scenario: Level-shifting and buffering between 3.3 V microcontroller GPIO and 5 V industrial I/O modules. IC Role / Device Role / Timing Role: Voltage translator and fanout driver with TTL-compatible inputs and 5 V CMOS outputs. Use Value: VIH = 2 V allows reliable recognition of 3.3 V logic highs; ±25 mA drive sustains signal integrity over 15 cm ribbon cables. |
| Electronic Point-of-Sale | Motor Drive Control Logic |
Use Scenario: Isolating printer controller signals from thermal head driver circuitry in retail kiosks. IC Role / Device Role / Timing Role: 3-state bus driver enabling shared data bus access between host MCU and peripheral ASICs. Use Value: Distributed GND pins suppress noise coupling into analog thermal sensing circuits; latch-up immunity prevents field failures. |
Use Scenario: Buffering PWM and direction signals from MCU to gate drivers in HVAC blower motor controllers. IC Role / Device Role / Timing Role: Robust digital interface conditioner with ESD-hardened I/O for noisy motor-drive environments. Use Value: 2000 V HBM rating withstands electrostatic discharge from operator touch; 125°C rating supports sealed enclosure operation. |
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 |
|---|---|---|---|
| SN74AHCT16244DGGR | Same die, identical specs, identical DGG package - differs only in tape-and-reel packaging (2000 pcs vs. 2000 pcs) and part marking ("AHCT16244" vs. "AHCT16244"). | No functional difference; both rated for –40°C to 125°C, same MSL-1, same RoHS/NIPDAU finish. | Select 74AHCT16244DGGRE4 for TI's standard production-grade reel with E4 suffix indicating enhanced quality screening. |
| SN74AHCT16244DGVR | Same functionality but in TVSOP-48 (DGV) package: smaller footprint (9.70 mm × 4.40 mm), thinner profile (1.0 mm max), tighter 0.4 mm pitch. | Better suited for space-constrained designs; slightly higher thermal resistance (RθJA = 83.5°C/W vs. 72.5°C/W) requires attention to power dissipation. | Choose SN74AHCT16244DGVR only when board area is critical and thermal margin permits; verify PCB land pattern compatibility. |
Compared with SN74AHCT16244DGGR, 74AHCT16244DGGRE4 offers identical electrical behavior with TI's enhanced manufacturing screening, while SN74AHCT16244DGVR trades thermal performance for compactness - making 74AHCT16244DGGRE4 optimal for industrial bus interfaces requiring reliability and thermal headroom.
Availability
74AHCT16244DGGRE4 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial bus interface, and electronic point-of-sale systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 74AHCT16244DGGRE4 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 logic families and industrial-grade interface ICs.
The 74AHCT16244DGGRE4 belongs to TI's Widebus™ family of high-density bus interface devices, designed specifically to improve performance and layout efficiency in memory addressing, clock distribution, and 3-state bus systems.
FAQ
What is the maximum operating temperature for the 74AHCT16244DGGRE4?
The 74AHCT16244DGGRE4 is fully specified from –40°C to +125°C ambient temperature. This extended range is validated per JEDEC JESD22-A108 and supported by thermal metrics including RθJA = 72.5°C/W (DGG package), enabling use in harsh industrial and automotive under-hood environments where the 74AHCT16244DGGRE4 maintains full logic functionality and timing compliance.
Does the 74AHCT16244DGGRE4 support 3.3 V input logic levels?
Yes, the 74AHCT16244DGGRE4 accepts 3.3 V logic inputs reliably: its VIH(min) = 2.0 V and VIL(max) = 0.8 V meet TTL thresholds, and inputs tolerate up to 5.5 V regardless of VCC. This makes the 74AHCT16244DGGRE4 ideal for translating 3.3 V microcontroller outputs to 5 V bus loads without external level shifters - a key capability confirmed in TI's SCLS334J datasheet Section 9.3.
How many ground pins does the 74AHCT16244DGGRE4 have, and why?
The 74AHCT16244DGGRE4 has eight dedicated GND pins (pins 4, 10, 15, 21, 28, 34, 39, 45) distributed across the TSSOP-48 package. This design minimizes ground-bounce noise and improves signal integrity during high-speed switching - a documented feature in the "Distributed VCC and GND Pins Minimize High-Speed Switching Noise" section of the 74AHCT16244DGGRE4 datasheet.
Is the 74AHCT16244DGGRE4 pin-compatible with other 16-bit AHCT buffers?
The 74AHCT16244DGGRE4 shares identical pinout and function with SN74AHCT16244DGGR and SN74AHCT16244DGVR (same pin numbering and I/O mapping), but mechanical compatibility requires verification: DGVR uses 0.4 mm pitch vs. DGG's 0.5 mm, so PCB footprints are not interchangeable. The 74AHCT16244DGGRE4 is not pin-compatible with non-AHCT variants like HCT or ACT due to differing DC specs and timing.
What is the recommended bypass capacitor configuration for the 74AHCT16244DGGRE4?
TI recommends placing a 0.01 μF ceramic capacitor near each VCC pin (pins 7, 18, 31, 42) of the 74AHCT16244DGGRE4, plus a bulk 0.1 μF capacitor shared across the supply net. This multi-capacitor strategy targets high-frequency noise suppression at individual pins and lower-frequency ripple - guidance explicitly stated in Section 11 ("Power Supply Recommendations") of the 74AHCT16244DGGRE4 datasheet.
74AHCT16244DGGRE4 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
74AHCT16244DGGRE4 FAQ
1.How can I place an order for 74AHCT16244DGGRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT16244DGGRE4 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 74AHCT16244DGGRE4 reliable?
The price and inventory of 74AHCT16244DGGRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT16244DGGRE4 is usually 5 days.
3.What payment methods are accepted for 74AHCT16244DGGRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT16244DGGRE4 transactions.
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4.How is shipping managed for 74AHCT16244DGGRE4?
74AHCT16244DGGRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT16244DGGRE4 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 74AHCT16244DGGRE4?
For technical support, including 74AHCT16244DGGRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT16244DGGRE4 requirements.
6.How does Aetrix verify that 74AHCT16244DGGRE4 is sourced from the original manufacturer or authorized distributors?
All 74AHCT16244DGGRE4 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 74AHCT16244DGGRE4 meets industry standards.
7.What is the process for return or replacement of 74AHCT16244DGGRE4?
All 74AHCT16244DGGRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT16244DGGRE4, 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 74AHCT16244DGGRE4 part is unused and in its original packaging.
Return procedure for 74AHCT16244DGGRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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