My Inquiry
My Account
Texas Instruments SN74ALVCH16244KR
- Part No.:
- SN74ALVCH16244KR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74ALVCH16244KR.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,987
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ALVCH16244KR from Texas Instruments is a 16-bit non-inverting 3-state buffer/driver IC operating from 1.65 V to 3.6 V, delivering ±24-mA output drive at 3.3 V with 3 ns max propagation delay, used in memory address buffering, clock distribution, and bus interface applications.
For engineers reviewing the SN74ALVCH16244KR datasheet, SN74ALVCH16244KR pinout, SN74ALVCH16244KR application, or SN74ALVCH16244KR equivalent, this page provides verified functional identity, GQL-package terminal mapping, bus-hold input behavior, 3-state timing specs, and direct alternatives for 1.65–3.6 V system-level signal buffering.
Technical Context
The SN74ALVCH16244KR implements four independent 4-bit buffers with symmetrical active-low output-enable (OE) inputs per group (1OE–4OE), supporting flexible partitioning as one 16-bit, two 8-bit, or four 4-bit drivers. Each buffer provides true (non-inverting) outputs and integrated bus-hold circuitry on all data inputs.
It operates across 1.65–3.6 V VCC, with input thresholds scaling with supply voltage (e.g., VIH = 0.65×VCC at 1.65 V), and guarantees 3 ns max tpd at 3.3 V. Output disable/enable times (tdis/ten) are specified down to 4.1 ns at 3.3 V, enabling high-speed bus arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports mixed-voltage I/O interfacing between 1.8 V, 2.5 V, and 3.3 V logic domains |
| Max Propagation Delay | 3 ns at VCC = 3.3 V - enables sub-333 MHz bus operation with timing margin |
| Output Drive | ±24 mA at VCC = 3.3 V - drives heavy capacitive loads or multiple CMOS inputs without external buffers |
| Bus-Hold Current | ±45 µA at VCC = 2.3 V - maintains stable logic state on floating inputs, eliminating external pullup/pulldown resistors |
| Input Capacitance | 6 pF - minimizes loading on upstream drivers and preserves signal integrity in high-speed traces |
| 3-State Leakage | ±10 µA at VCC = 3.6 V - ensures clean high-impedance state during bus contention or power sequencing |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements without additional protection circuitry |
Pinout & Package
VFBGA package (GQL), 56-ball grid array, 0.5-mm pitch, 7.0 mm × 4.5 mm body size, 1.0-mm max height, JEDEC MO-194 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Independent control of each 4-bit buffer group; must be tied to VCC via pullup during power-up to ensure Hi-Z state |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs | All inputs feature bus-hold circuitry; no external biasing required for unused lines |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True 3-state outputs | Non-inverting outputs with ±24-mA drive; high-impedance when corresponding OE is high |
| VCC (pins C3, C4, H3, H4, J3, J4) | Power supply | Multiple distributed VCC balls reduce IR drop and improve noise immunity across wide bus |
| GND (pins B3, B4, D3, D4, E3, E4, G3, G4) | Ground reference | Eight dedicated ground balls provide low-inductance return paths for all 16 outputs |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.65–3.6 V) | Enables single-component compatibility across 1.8 V, 2.5 V, and 3.3 V system rails without level shifters |
| Integrated bus-hold on all inputs | Eliminates need for 10-kΩ pullup/pulldown resistors on unused address/data lines, reducing BOM count and board area |
| Low 3 ns propagation delay at 3.3 V | Supports >300 MHz clock/data rates in memory and peripheral interfaces with timing margin |
| ±24-mA output drive capability | Drives up to 10 standard CMOS loads or 30 pF trace capacitance while maintaining VOH/VOL specs |
| 56-ball VFBGA (GQL) package | Compact 7.0 × 4.5 mm footprint with fine-pitch I/O enables high-density routing in space-constrained applications |
Applications
| Memory Address Buffering | Clock Distribution |
|---|---|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or Flash memory in embedded systems. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address outputs from memory load; OE controlled by chip-select logic. Use Value: Prevents bus contention during memory access cycles; bus-hold maintains valid address on floating lines during reset or standby. | Use Scenario: Fan-out of system clock signal to multiple peripherals (e.g., ADC, DAC, UART) in industrial controllers. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with independent OE control per 4-bit segment for dynamic clock gating. Use Value: 3 ns tpd ensures <100 ps skew across 16 outputs; ±24-mA drive sustains signal integrity over 5-cm PCB traces. |
| PCI/ISA Bus Interface | Hot-Swap I/O Expansion |
Use Scenario: Level-shifting and isolation between 3.3 V host controller and legacy 5 V PCI-compatible peripherals. IC Role / Device Role / Timing Role: Bidirectional bus driver (with external direction control) managing data/address latching and tristate arbitration on shared bus segments. Use Value: 1.65–3.6 V operation matches modern host I/O; bus-hold prevents glitches during plug-in/out sequences. | Use Scenario: Enabling/disabling I/O modules in modular PLC backplanes where modules may be inserted or removed under power. IC Role / Device Role / Timing Role: 3-state buffer controlling signal path between backplane bus and module-specific logic; OE synchronized to hot-swap controller. Use Value: Fast 4.1 ns tdis ensures immediate bus release upon module removal; low leakage (<10 µA) prevents false triggering during insertion. |
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 |
|---|---|---|---|
| SN74LVC16244ADGGR | Lower drive (±24 mA only at 3.3 V; drops to ±12 mA at 2.5 V); no bus-hold circuitry | Requires external pullups on unused inputs; less suitable for floating-bus environments | Select when cost sensitivity outweighs bus-hold requirement and VCC is stable at 3.3 V |
| SN74AVC16244DGGR | Wider VCC range (1.2–3.6 V); higher speed (2.2 ns tpd at 3.3 V); no bus-hold | Supports 1.2 V core logic but lacks input stabilization for unconnected lines | Choose for ultra-low-voltage designs where external biasing is acceptable and timing is critical |
Compared with SN74LVC16244ADGGR and SN74AVC16244DGGR, the SN74ALVCH16244KR uniquely combines bus-hold functionality with full 1.65–3.6 V operation and guaranteed 3 ns timing-making it optimal for robust, mixed-voltage bus buffering where input stability is essential without added passives.
Availability
SN74ALVCH16244KR is available at Aetrix Electronics and suitable for memory subsystems, industrial clock trees, PCI-compatible interfaces, and hot-swap I/O expansion requiring stable component supply and long-term manufacturability.
Supply support for SN74ALVCH16244KR 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 and signal conditioning ICs.
The SN74ALVCH16244KR belongs to TI's Widebus™ family-designed specifically to enhance density and performance of 3-state memory address drivers, clock fan-outs, and bus-oriented transceivers in space- and power-constrained systems.
FAQ
What is the function of the bus-hold circuitry in SN74ALVCH16244KR?
The bus-hold circuitry in SN74ALVCH16244KR actively maintains unused or undriven inputs at their last-valid logic state using ±45 µA hold current (at 2.3 V), eliminating the need for external pullup or pulldown resistors. This feature prevents floating-input-induced glitches and reduces BOM complexity, especially in memory address or control bus applications where pins may be left unconnected during configuration.
Does SN74ALVCH16244KR support 1.8 V operation?
Yes, SN74ALVCH16244KR fully supports 1.8 V operation within its 1.65–3.6 V VCC range. At 1.8 V, it delivers ±12 mA output drive, maintains VIH/VIL thresholds scaled to 0.65×VCC and 0.35×VCC respectively, and achieves typical 3.7 ns propagation delay-making it suitable for low-voltage FPGA I/O banks and battery-powered microcontroller peripherals.
What is the recommended power-up sequence for SN74ALVCH16244KR?
During power-up, OE inputs of SN74ALVCH16244KR must be held high (inactive) until VCC stabilizes to prevent unintended output activation. TI recommends tying each OE to VCC through a pullup resistor (minimum value determined by driver sink capability); no external power sequencing controller is required if OE is biased correctly, ensuring outputs remain in high-impedance state throughout ramp-up.
How does the GQL package of SN74ALVCH16244KR differ from TSSOP or SSOP variants?
The GQL package of SN74ALVCH16244KR is a 56-ball VFBGA (7.0 × 4.5 mm, 0.5-mm pitch) offering superior thermal performance (θJA = 42°C/W) and lower inductance versus 48-pin TSSOP (DGG) or SSOP (DL) packages. Its compact footprint and distributed power/ground balls support high-speed signal integrity and dense PCB layouts-ideal for portable and industrial modules where space and EMI are critical.
Can SN74ALVCH16244KR be used as an 8-bit buffer?
Yes, SN74ALVCH16244KR can be configured as two independent 8-bit buffers by asserting 1OE and 2OE together for the first eight bits (1A1–2A4 → 1Y1–2Y4), and 3OE and 4OE together for the second eight bits (3A1–4A4 → 3Y1–4Y4). Each group retains full 3-state control, bus-hold, and ±24-mA drive-enabling flexible partitioning without performance penalty.
SN74ALVCH16244KR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVCH
- Package/Case:
- 56-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74ALVCH16244KR FAQ
1.How can I place an order for SN74ALVCH16244KR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVCH16244KR 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 SN74ALVCH16244KR reliable?
The price and inventory of SN74ALVCH16244KR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVCH16244KR is usually 5 days.
3.What payment methods are accepted for SN74ALVCH16244KR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVCH16244KR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALVCH16244KR?
SN74ALVCH16244KR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALVCH16244KR 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 SN74ALVCH16244KR?
For technical support, including SN74ALVCH16244KR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVCH16244KR requirements.
6.How does Aetrix verify that SN74ALVCH16244KR is sourced from the original manufacturer or authorized distributors?
All SN74ALVCH16244KR 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 SN74ALVCH16244KR meets industry standards.
7.What is the process for return or replacement of SN74ALVCH16244KR?
All SN74ALVCH16244KR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVCH16244KR, 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 SN74ALVCH16244KR part is unused and in its original packaging.
Return procedure for SN74ALVCH16244KR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ALVCH16244KR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
