My Inquiry
My Account
STMicroelectronics 74VCX16374TTR
- Part No.:
- 74VCX16374TTR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74VCX16374TTR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,957
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74VCX16374TTR from STMicroelectronics is a 16-bit non-inverting D-type flip-flop with 3-state outputs, designed for low-voltage bus interface and data latching in 1.8V–3.6V systems. It features dual independent clock (1CK/2CK) and output enable (1OE/2OE) controls, 3.6V-tolerant I/O, propagation delay as low as 3.0 ns at 3.3V, and ±24 mA drive strength at VCC = 3.0V - enabling use in high-speed memory address/data buffers and FPGA I/O expansion.
For engineers reviewing the 74VCX16374TTR datasheet, 74VCX16374TTR pinout, 74VCX16374TTR application, or 74VCX16374TTR equivalent, this device is selected for synchronous 16-bit edge-triggered storage with independent bank control, 3-state bus isolation, and robust ESD immunity (HBM >2000V), critical in mixed-voltage industrial controllers and telecom line-card logic.
Technical Context
This device implements two independent 8-bit D-type latch banks, each with dedicated clock and output-enable inputs, allowing asynchronous control of output states without disrupting internal register operation. Each bank supports simultaneous data capture on the rising edge of its clock while maintaining data integrity during output disable.
Its 3.6V-tolerant inputs/outputs permit direct interfacing with legacy 3.3V or 5V logic families without level shifters, and symmetrical ±24 mA (min) drive capability at 3.0V ensures clean signal integrity across PCB traces up to 15 cm in length under typical load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 3.6V - enables single-rail operation across modern low-power SoC interfaces and battery-powered systems. |
| Max Propagation Delay | 3.0 ns (max) at VCC = 3.0–3.6V - supports 250 MHz clock operation in synchronous bus applications. |
| Output Drive Strength | ±24 mA (min) at VCC = 3.0V - drives 50 Ω transmission lines or multiple CMOS loads without external buffering. |
| Input/Output Tolerance | 3.6V tolerant - allows safe connection to 3.3V or 5V signal domains without clamping diodes or external protection. |
| ESD Immunity | HBM >2000V, MM >200V - meets industrial-grade reliability requirements for board-level handling and field deployment. |
| Operating Temperature | −55°C to +125°C - qualified for extended-temperature automotive and industrial control environments. |
| Quiescent Current | 20 µA (max) - minimizes standby power in always-on subsystems such as sensor hubs or real-time clocks. |
Pinout & Package
TSSOP-48 package (4.4 mm × 12.6 mm body, 0.5 mm pitch), thermally enhanced for high-density PCB layouts with minimal footprint impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | 1OE, 2OE | Active-low 3-state output enable for Bank 1 and Bank 2 - decouples output drivers without affecting internal latch state. |
| 48, 25 | 1CK, 2CK | Rising-edge clock inputs controlling data capture into Bank 1 and Bank 2 independently. |
| 37–47, 26–36 | 1D0–1D7, 2D0–2D7 | Asynchronous data inputs for each 8-bit bank - accepts valid setup/hold timing across full voltage range. |
| 2–3, 5–6, 8–9, 11–12, 13–14, 16–17, 19–20, 22–23 | 1Q0–1Q7, 2Q0–2Q7 | Non-inverting 3-state outputs - high-impedance state isolates buses during arbitration or power-down sequences. |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground pins distributed across package - reduces ground bounce and improves noise immunity in high-speed switching. |
| 7, 18, 31, 42 | VCC | Four dedicated VCC pins - lowers supply impedance and stabilizes core voltage during simultaneous output transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit banks | Enables split-bus control - e.g., one bank for address latching, another for data strobing - without inter-bank timing constraints. |
| Power-down input/output protection | Prevents back-driving and leakage when VCC = 0V - essential for hot-swap and partial-power-down system architectures. |
| Symmetrical output drive (|IOH| = IOL) | Ensures matched rise/fall times and reduced signal distortion on bidirectional buses like PCI-X or custom parallel interfaces. |
| Latch-up immunity >300 mA (JESD17) | Guarantees robustness against transient overvoltage events in noisy industrial environments without system reset. |
| Low dynamic noise (VOLP/VOLV/VOHV specified) | Quantified quiet-output voltage margins support stable timing margining in high-speed DDR or burst-mode memory interfaces. |
Applications
| Industrial PLC Backplane Interface | FPGA I/O Expansion Module |
|---|---|
|
Use Scenario: Isolating and latching parallel I/O signals between FPGA fabric and legacy 3.3V peripheral modules on a modular PLC carrier board. IC Role / Device Role / Timing Role: 16-bit edge-triggered data latch with independent bank enables - synchronizes asynchronous peripheral reads/writes while preventing bus contention. Use Value: 3.6V-tolerant I/O eliminates level-shifters; 3.0 ns tPD supports 250 MHz FPGA-to-peripheral handshaking; dual OE allows staggered enable for glitch-free bus arbitration. |
Use Scenario: Extending FPGA GPIO count for sensor array control in an automotive ADAS domain controller with strict EMI and thermal limits. IC Role / Device Role / Timing Role: Non-inverting 3-state D-flip-flop providing synchronized, isolated output staging for 16-channel PWM or digital sensor enable lines. Use Value: ±24 mA drive at 3.0V directly drives optocouplers or LED indicators; −55°C to +125°C rating matches under-hood temperature requirements; HBM >2000V withstands assembly ESD events. |
| Memory Address Buffer (DDR2/DDR3) | Telecom Line Card Data Multiplexer |
|
Use Scenario: Latching row/column address bits from a memory controller to SDRAM chips operating at 1.8V or 2.5V in networking equipment. IC Role / Device Role / Timing Role: Low-skew (0.5 ns max) 16-bit address register with independent clocking per bank - aligns timing across dual-rank DIMM channels. Use Value: tOSLH/tOSHL ≤0.5 ns ensures address setup consistency across all 16 bits; 1.8V operation matches DDR2 LVTTL signaling; 6 mA drive sufficient for on-die termination loads. |
Use Scenario: Time-division multiplexing of 16 diagnostic status signals from multiple line cards onto a shared backplane monitoring bus. IC Role / Device Role / Timing Role: 3-state-controlled data latch acting as a synchronous bus switch - enables time-sliced readout without contention or metastability. Use Value: Dual OE inputs allow precise temporal gating of each 8-bit bank; 3.6V tolerance accommodates mixed-voltage backplane signaling; 20 µA ICC enables low-power monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374ADGGR | TI part with identical pinout and function but lower max fMAX (200 MHz @ 3.3V vs. 250 MHz), higher ICC (40 µA vs. 20 µA), and no 1.8V min spec. | Not rated for 1.8V operation - unsuitable for ultra-low-voltage SoC interfaces requiring 1.8V–2.5V compatibility. | Select if TI ecosystem alignment or existing PCB layout reuse is prioritized over 1.8V support and lowest quiescent current. |
| 74ALVC16374PW | NXP part with same TSSOP-48 package and 3.6V tolerance, but higher VOL (0.55V @ 24 mA) and no −55°C rating - only rated to −40°C. | Limited for extended-temperature deployments (e.g., outdoor telecom cabinets or engine-control units). | Select when cost sensitivity outweighs extended temp qualification and tighter output voltage specs. |
Compared with SN74LVC16374ADGGR and 74ALVC16374PW, the 74VCX16374TTR uniquely supports full 1.8V–3.6V operation with guaranteed −55°C performance, lowest ICC, and tightest VOL/VOLP specs - making it optimal for energy-constrained, wide-temperature, and high-speed mixed-voltage designs.
Availability
74VCX16374TTR is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion modules, DDR2/DDR3 memory address buffering, and telecom line card multiplexing requiring stable component supply across long-lifecycle programs.
Supply support for 74VCX16374TTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering silicon solutions for automotive, industrial, and consumer markets since 1987.
The VCX family targets low-voltage, high-speed logic interfacing - specifically engineered for 1.8V–3.6V mixed-signal systems requiring 3.6V-tolerant I/O, low power, and robust ESD/latch-up immunity.
FAQ
Is the 74VCX16374TTR compatible with 5V logic inputs?
No - it is rated for 3.6V-tolerant inputs only. Applying 5V violates the absolute maximum rating (VI ≤ +4.6V is destructive; recommended VI ≤ +3.6V). Use level-shifting circuitry or a 5V-tolerant alternative like the 74LVT16374 for true 5V interface compatibility.
Can both output banks be enabled simultaneously without timing conflict?
Yes - 1OE and 2OE operate independently; enabling both simultaneously produces fully synchronized 16-bit output behavior. The device guarantees tOSLH/tOSHL ≤0.5 ns across all outputs, ensuring deterministic skew for parallel bus applications.
What is the minimum clock pulse width required at 1.8V operation?
At VCC = 1.8V, the minimum CK pulse width (tw) is 4.0 ns (high or low), as specified in the AC Electrical Characteristics table. This supports maximum clock frequencies up to 125 MHz in 1.8V systems.
Does the device retain latch state during output disable?
Yes - asserting 1OE or 2OE places only the corresponding Q outputs in high-impedance state; internal flip-flop states remain unchanged and continue to respond to clock and data inputs, enabling seamless re-enablement without data loss.
74VCX16374TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74VCX
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- 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:
- 235 MHz
- Max Propagation Delay @ V, Max CL:
- 4.1ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 6 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74VCX16374TTR FAQ
1.How can I place an order for 74VCX16374TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VCX16374TTR 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 74VCX16374TTR reliable?
The price and inventory of 74VCX16374TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCX16374TTR is usually 5 days.
3.What payment methods are accepted for 74VCX16374TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCX16374TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VCX16374TTR?
74VCX16374TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VCX16374TTR 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 74VCX16374TTR?
For technical support, including 74VCX16374TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCX16374TTR requirements.
6.How does Aetrix verify that 74VCX16374TTR is sourced from the original manufacturer or authorized distributors?
All 74VCX16374TTR 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 74VCX16374TTR meets industry standards.
7.What is the process for return or replacement of 74VCX16374TTR?
All 74VCX16374TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74VCX16374TTR, 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 74VCX16374TTR part is unused and in its original packaging.
Return procedure for 74VCX16374TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74VCX16374TTR 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 and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
