My Inquiry
My Account
Texas Instruments SN74AUCH16374GQLR
- Part No.:
- SN74AUCH16374GQLR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-VFBGA
- Datasheet:
-
SN74AUCH16374GQLR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,835
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AUCH16374 from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65–1.95 V operation and 3.6-V I/O tolerant signaling. It features dual 8-bit banks, bus-hold on all data inputs, ±8-mA drive at 1.8 V, and 2.8 ns max propagation delay (tpd) at 1.8 V - enabling high-speed, low-voltage register buffering in memory interfaces and bidirectional data buses.
For engineers reviewing the SN74AUCH16374 datasheet, SN74AUCH16374 pinout, SN74AUCH16374 application, or SN74AUCH16374 equivalent, key selection considerations include its VFBGA GQL package (48-pin, 3.6 mm × 4.6 mm), Ioff partial-power-down support, sub-1-V operability, and compatibility with mixed-mode 1.8-V/3.3-V system interconnects.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D flip-flop banks, each with dedicated clock (CLK) and output-enable (OE) controls. All 16 Q outputs are 3-state capable, and internal bus-hold circuitry eliminates external pullup/pulldown resistors on D inputs.
It operates across 0.8–2.7 V VCC but is optimized for 1.65–1.95 V supply; Ioff protection disables outputs during power-down to prevent backflow current, and absolute input/output voltage tolerance extends to ±0.5 V beyond VCC (up to 3.6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V; fully functional down to sub-1-V logic, with optimal timing at 1.65–1.95 V. |
| tpd (Max) | 2.8 ns at 1.8 V; enables >250 MHz clock operation in high-speed register applications. |
| I/O Voltage Tolerance | 3.6 V; supports mixed-mode interfacing between 1.8-V logic and 3.3-V peripherals without level shifters. |
| Output Drive | ±8 mA at 1.8 V; sufficient to directly drive standard CMOS loads and short PCB traces. |
| Bus-Hold Current | IBHL up to 20 µA at 1.65 V; maintains valid logic state on floating inputs without external biasing. |
| Ioff Leakage | ±10 µA max at 2.7 V; prevents damaging current flow during partial power-down sequences. |
| ICC (Max) | 20 µA; ultra-low static power ideal for battery-sensitive and always-on subsystems. |
Pinout & Package
VFBGA package: GQL (48-pin, 3.6 mm × 4.6 mm, 0.5-mm pitch, 1.0-mm max height). Pin 1 located at corner A1; no internal connections at B1, C1, D1, E1, F1, G1, H1, J1, K1, A6, B6, C6, D6, E6, F6, G6, H6, J6, K6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output enable (active low) | Independent control of each 8-bit bank's 3-state output drivers; OE high = high-impedance mode. |
| 1CLK, 2CLK | Clock input (positive edge) | Edge-triggered sampling of D inputs; asynchronous to OE - data latched regardless of output state. |
| 1D1–1D8, 2D1–2D8 | Data inputs | All inputs feature integrated bus-hold; no external resistors needed for unused or undriven lines. |
| 1Q1–1Q8, 2Q1–2Q8 | Registered outputs | 3-state outputs retain last latched value when OE is high; drive capability matches input voltage range. |
| VCC, GND | Power terminals | Four VCC and six GND pins distributed across package for low-noise, low-inductance supply routing. |
Key Features
| Feature | Design Value |
|---|---|
| 1.65–1.95 V optimized operation | Guaranteed timing performance and signal integrity within narrow core voltage window for modern low-power SoC interfaces. |
| 3.6-V I/O tolerance | Enables direct connection to legacy 3.3-V buses without level translators or additional power domains. |
| Integrated bus-hold | Eliminates need for 10-kΩ external pullups/pulldowns on data lines - reduces BOM count and layout area. |
| Ioff partial-power-down support | Prevents back-current flow when VCC = 0 V while other rails remain active - critical for hot-swap and power-gating systems. |
| Sub-1-V operability | Functional at 0.8 V VCC, supporting emerging ultra-low-voltage design requirements and brownout resilience. |
Applications
| Memory Interface Buffering | Low-Voltage I/O Expansion |
|---|---|
|
Use Scenario: Isolating and registering address/data signals between a 1.8-V microcontroller and parallel SRAM or Flash memory. IC Role / Device Role / Timing Role: Acts as a synchronous, edge-triggered latch to align data transfers with clock edges and decouple timing skew between controller and memory. Use Value: Enables reliable 250-MHz burst reads/writes using only 1.8-V supply, with bus-hold preventing glitches on unasserted address lines. |
Use Scenario: Expanding GPIO count on an energy-harvesting sensor node operating from a 1.2-V battery source. IC Role / Device Role / Timing Role: Provides 16-bit bidirectional, 3-state I/O port with independent OE control per bank for peripheral multiplexing. Use Value: Operates down to 0.8 V VCC while maintaining 2.8-ns tpd - preserves real-time responsiveness even under deep discharge conditions. |
| Bidirectional Bus Transceiver | Mixed-Voltage System Interconnect |
|
Use Scenario: Implementing a shared data bus between two 1.8-V ASICs with staggered enable timing. IC Role / Device Role / Timing Role: Functions as dual 8-bit transparent latch with independent OE control, allowing half-bus direction switching without contention. Use Value: ±8-mA drive strength and 3.6-V I/O tolerance permit direct connection to 3.3-V test equipment during bring-up without isolation components. |
Use Scenario: Interfacing a 1.8-V FPGA I/O bank to a 3.3-V ADC and DAC in a mixed-signal acquisition module. IC Role / Device Role / Timing Role: Serves as voltage-tolerant, registered interface buffer - latching ADC output before FPGA sampling and holding DAC input until update. Use Value: Eliminates discrete level shifters and reduces timing uncertainty via deterministic 2.8-ns propagation path across full 1.8–3.3-V voltage domain boundary. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374DGVR | Wider VCC range (1.65–3.6 V); higher ICC (max 40 µA); no bus-hold; 3.3-V optimized. | Suitable for 3.3-V dominant systems where 1.8-V operation is secondary; lacks sub-1-V capability. | Choose when interfacing primarily with 3.3-V logic and lower static power is not required. |
| SN74AVC16374GQLR | Same GQL package; supports 1.2–3.6 V; higher speed (tpd = 2.1 ns @ 1.5 V); no Ioff. | Better for high-frequency (>300 MHz) applications but lacks partial-power-down protection. | Prefer when maximum speed is critical and system power sequencing excludes partial-power-down scenarios. |
Compared with SN74LVC16374DGVR and SN74AVC16374GQLR, the SN74AUCH16374 uniquely combines sub-1-V operation, Ioff, and bus-hold - making it the only option among the three qualified for ultra-low-voltage, hot-pluggable, and resistorless-input designs.
Availability
SN74AUCH16374 is available at Aetrix Electronics and suitable for memory interface buffering, low-voltage I/O expansion, bidirectional bus transceivers, and mixed-voltage system interconnects requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for SN74AUCH16374 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 innovation in high-speed, low-power interface ICs.
The SN74AUCH16374 belongs to TI's Widebus™ family - engineered specifically for low-voltage, high-density digital interfacing in portable, battery-powered, and mixed-signal systems.
FAQ
What is the minimum operating voltage for the SN74AUCH16374?
The SN74AUCH16374 is fully specified down to 0.8 V VCC and remains functional in sub-1-V operation. Its timing parameters (e.g., tpd, tsu) are guaranteed across 0.8–2.7 V, with optimal performance in the 1.65–1.95 V range. This makes the SN74AUCH16374 suitable for ultra-low-power applications where supply voltage may dip during battery discharge or dynamic voltage scaling.
Does the SN74AUCH16374 require external pullup or pulldown resistors on its data inputs?
No. The SN74AUCH16374 integrates bus-hold circuitry on all 16 data inputs (1D1–1D8, 2D1–2D8), which actively maintains the last-valid logic state when inputs float. TI explicitly advises against using external pullup/pulldown resistors with this feature, as they may interfere with bus-hold current thresholds and degrade noise immunity.
Can the SN74AUCH16374 be used in mixed-voltage systems with both 1.8-V and 3.3-V components?
Yes. The SN74AUCH16374 supports 3.6-V I/O tolerance while operating from a 1.65–1.95 V VCC supply. This allows its inputs and outputs to safely interface with 3.3-V logic levels without level shifters - provided VI and VO remain within –0.5 V to 3.6 V and output current limits (±20 mA) are observed.
What is the purpose of the Ioff feature in the SN74AUCH16374?
The Ioff feature disables all outputs when VCC = 0 V, limiting off-state leakage current to ±10 µA max. This prevents damaging back-current flow from live I/O lines into a powered-down device - a critical requirement for hot-swap, partial-power-down, and multi-rail power sequencing in industrial and telecom systems using the SN74AUCH16374.
How does the SN74AUCH16374 handle clock and output-enable timing interactions?
In the SN74AUCH16374, the clock (CLK) and output-enable (OE) paths are asynchronous. Latching occurs on the positive CLK edge regardless of OE state; OE only affects output driver activation. Thus, new data can be captured while outputs remain in high-impedance, and previously latched data persists in the register even when OE is asserted - enabling glitch-free bus arbitration and pipelined data staging.
SN74AUCH16374GQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUCH
- Package/Case:
- 56-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Clock Frequency:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 2.2ns @ 2.5V, 30pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74AUCH16374GQLR FAQ
1.How can I place an order for SN74AUCH16374GQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUCH16374GQLR 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 SN74AUCH16374GQLR reliable?
The price and inventory of SN74AUCH16374GQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUCH16374GQLR is usually 5 days.
3.What payment methods are accepted for SN74AUCH16374GQLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUCH16374GQLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUCH16374GQLR?
SN74AUCH16374GQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUCH16374GQLR 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 SN74AUCH16374GQLR?
For technical support, including SN74AUCH16374GQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUCH16374GQLR requirements.
6.How does Aetrix verify that SN74AUCH16374GQLR is sourced from the original manufacturer or authorized distributors?
All SN74AUCH16374GQLR 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 SN74AUCH16374GQLR meets industry standards.
7.What is the process for return or replacement of SN74AUCH16374GQLR?
All SN74AUCH16374GQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUCH16374GQLR, 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 SN74AUCH16374GQLR part is unused and in its original packaging.
Return procedure for SN74AUCH16374GQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AUCH16374GQLR Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
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…
