My Inquiry
My Account
Texas Instruments SN74AHC374DGVRE4
- Part No.:
- SN74AHC374DGVRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHC374DGVRE4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,340
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AHC374DGVRE4 from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for bus interface applications requiring controlled drive strength and low-output ringing. It operates from 2 V to 5.5 V, supports 8-bit parallel data latching on CLK rising edge, and features output-enable (OE) control for high-impedance bus isolation - used in server motherboards and network switches.
For engineers reviewing the SN74AHC374DGVRE4 datasheet, SN74AHC374DGVRE4 pinout, SN74AHC374DGVRE4 application, or SN74AHC374DGVRE4 equivalent, key selection criteria include its 3-state output timing (tPLH/tPHL ≤10.5 ns at 5 V), ±25 mA output drive capability, 20-pin TVSOP package (5.00 mm × 6.4 mm), and overvoltage-tolerant inputs (up to 5.5 V).
Technical Context
The SN74AHC374DGVRE4 implements eight independent D-type latches synchronized to the rising edge of CLK, with a shared active-low output-enable (OE) controlling all eight Q outputs. Its CMOS AHC logic family delivers balanced rise/fall times and reduced output ringing versus higher-drive families like AC, making it suitable for lightly loaded or capacitive bus lines.
Each channel accepts D inputs tolerant to 5.5 V regardless of VCC (2–5.5 V), enabling voltage-level translation. The device enters high-impedance state when OE is high, decoupling outputs from the bus without external pull-ups or interface components - critical for bidirectional bus drivers and I/O port expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports mixed-voltage system interfacing and down-translation from 5 V logic to lower-core supplies. |
| Max Output Drive | ±25 mA per output - sufficient to drive moderate-capacitance buses without external buffers, but limits trace length and fan-out. |
| tPLH / tPHL (5 V) | ≤10.5 ns (CL = 50 pF) - ensures reliable timing in 25-MHz+ synchronous bus applications with margin. |
| Input Voltage Tolerance | Up to 5.5 V on all inputs - enables safe interfacing with 5 V controllers even when VCC = 3.3 V or 2.5 V. |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional protection circuitry. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature industrial and telecom infrastructure use. |
| Package | TVSOP-20 (DGV), 5.00 mm × 6.4 mm - surface-mount, fine-pitch package optimized for high-density PCB layouts. |
Pinout & Package
SN74AHC374DGVRE4 uses a 20-pin Thin Very Small Outline Package (TVSOP, suffix DGV), measuring 5.00 mm × 6.4 mm with 0.5 mm lead pitch. The package is RoHS-compliant, moisture-sensitive level 1 (MSL-1), and rated for reflow up to 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (active-low) | Global 3-state enable: drives all Q outputs high-Z when high; enables normal logic states when low. |
| 2–9, 12, 15, 16, 19 | Q1–Q8 outputs | Octal latched data outputs; each independently driven, 3-state capable, ±25 mA sink/source. |
| 3–4, 7–8, 13–14, 17–18 | D1–D8 inputs | Asynchronous data inputs sampled on CLK rising edge; 5.5 V tolerant regardless of VCC. |
| 11 | CLK | Rising-edge clock input; triggers simultaneous capture of all eight D inputs into respective Q latches. |
| 10 | GND | Ground reference for logic and power; must be low-impedance connection to minimize noise coupling. |
| 20 | VCC | Primary power supply (2–5.5 V); requires local 0.1 µF bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Slow-edge output drive | Reduces overshoot/undershoot on transmission lines - eliminates need for series termination in many bus designs. |
| Overvoltage-tolerant inputs | Accepts 0–5.5 V input signals at any valid VCC (2–5.5 V), enabling seamless 5 V-to-3.3 V logic translation. |
| High-impedance bus isolation | OE-controlled 3-state outputs prevent bus contention during data arbitration or hot-swap events. |
| Low dynamic power consumption | Typical Cpd = 32 pF - minimizes switching current and heat generation in high-frequency operation. |
| Latch-up immunity | >250 mA per JESD17 - ensures robustness against transient current injection in noisy environments. |
Applications
| Server Motherboard I/O Expansion | Industrial Network Switch Backplane |
|---|---|
|
Use Scenario: Expanding GPIO or address/data bus lines between CPU and peripheral ASICs on a dense server motherboard. IC Role / Device Role / Timing Role: Acts as an octal buffer register, latching control signals synchronously to system clock while isolating downstream logic during configuration phases. Use Value: Enables clean signal integrity across 50-mm traces with CL ≤ 50 pF, avoiding ringing-induced setup violations at 25 MHz. |
Use Scenario: Isolating and latching status/control bits between switch fabric ASIC and management MCU in a 1U rack-mounted Ethernet switch. IC Role / Device Role / Timing Role: Provides 3-state bus arbitration for shared configuration registers, preventing contention during firmware updates or link renegotiation. Use Value: ±25 mA drive and 10.5 ns propagation delay ensure deterministic timing margins under worst-case voltage/temperature conditions. |
| Test & Measurement Equipment Interface | Motor Control I/O Module |
|
Use Scenario: Interfacing FPGA-based pattern generators with legacy DUT connectors requiring TTL-compatible 5 V signaling and precise edge alignment. IC Role / Device Role / Timing Role: Serves as a level-translating latch, capturing FPGA outputs at 5 V while powered from 3.3 V supply - leveraging 5.5 V input tolerance. Use Value: Eliminates need for discrete level shifters; reduces BOM count and layout area in space-constrained benchtop instruments. |
Use Scenario: Buffering digital command signals (enable, direction, fault reset) between microcontroller and isolated gate drivers in a servo drive module. IC Role / Device Role / Timing Role: Functions as a noise-immune I/O port expander, with high-impedance state preventing false triggering during EMI-heavy motor commutation events. Use Value: 2000 V HBM ESD rating and –40°C to +125°C operation ensure reliability in electrically harsh factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC374APWR | Lower VCC range (1.65–3.6 V), faster tPLH (6.3 ns @ 3.3 V), 24 mA drive - not 5.5 V input tolerant. | Better suited for pure 3.3 V systems; cannot interface directly with 5 V controllers without external level shifting. | Select when operating exclusively at 3.3 V and maximum speed is prioritized over voltage flexibility. |
| 74AHC574PW,118 | Same AHC family, identical 2–5.5 V range and 5.5 V input tolerance, but SO-20 package (larger footprint, 12.8 mm × 10.3 mm). | Compatible functionally and electrically, but requires PCB redesign due to different thermal and mechanical profile. | Choose for legacy SOIC layouts where TVSOP rework is impractical; verify thermal derating for same power dissipation. |
Compared with SN74LVC374APWR and 74AHC574PW,118, the SN74AHC374DGVRE4 uniquely balances 5.5 V input tolerance, TVSOP space efficiency, and industrial temperature support - making it optimal for mixed-voltage, high-density embedded control interfaces.
Availability
SN74AHC374DGVRE4 is available at Aetrix Electronics and suitable for server motherboard I/O expansion, industrial network switch backplanes, and motor control I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AHC374DGVRE4 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 heritage in high-reliability interface and timing ICs.
The SN74AHC374DGVRE4 belongs to TI's AHC logic family - engineered for robust noise immunity, wide supply range, and controlled edge rates in industrial and communications infrastructure applications.
FAQ
What is the maximum clock frequency supported by SN74AHC374DGVRE4 at 3.3 V?
At VCC = 3.3 V ± 0.3 V and CL = 15 pF, SN74AHC374DGVRE4 supports a maximum clock frequency (fMAX) of 70 MHz over its full operating temperature range (–40°C to +125°C). This is confirmed in Section 5.8 of the official datasheet, with typical performance reaching 130 MHz at 25°C ambient.
Does SN74AHC374DGVRE4 require external pull-up resistors on its Q outputs?
No, SN74AHC374DGVRE4 does not require external pull-up resistors on its Q outputs. Its 3-state outputs actively drive high or low when enabled, and enter true high-impedance (not weak pull-up) when OE is asserted - eliminating bus leakage and ensuring clean signal isolation without passive components.
Can SN74AHC374DGVRE4 safely interface a 5 V microcontroller with a 3.3 V FPGA?
Yes, SN74AHC374DGVRE4 can safely interface a 5 V microcontroller with a 3.3 V FPGA. Its inputs tolerate up to 5.5 V regardless of VCC, so connecting 5 V MCU outputs to D/CLK/OE pins is safe when VCC = 3.3 V. Outputs swing rail-to-rail (0–3.3 V), matching FPGA input thresholds.
What is the thermal resistance (RθJA) of SN74AHC374DGVRE4 in its TVSOP package?
The junction-to-ambient thermal resistance (RθJA) for SN74AHC374DGVRE4 in the TVSOP-20 (DGV) package is 117.2°C/W, as specified in Section 5.4 of the datasheet. This value assumes standard JEDEC 2-layer board conditions and informs thermal design for continuous operation at max load.
Is SN74AHC374DGVRE4 pin-compatible with other members of the SN74AHC374 family?
Yes, SN74AHC374DGVRE4 shares identical pinout and functionality with all SN74AHC374 variants (e.g., DB, DW, N, PW packages). Pin numbering, signal assignment (OE, CLK, D1–D8, Q1–Q8, GND, VCC), and electrical behavior are fully consistent across the family - only package dimensions and thermal characteristics differ.
SN74AHC374DGVRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- 20-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 120 MHz
- Max Propagation Delay @ V, Max CL:
- 10.1ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TVSOP
SN74AHC374DGVRE4 FAQ
1.How can I place an order for SN74AHC374DGVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC374DGVRE4 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 SN74AHC374DGVRE4 reliable?
The price and inventory of SN74AHC374DGVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC374DGVRE4 is usually 5 days.
3.What payment methods are accepted for SN74AHC374DGVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHC374DGVRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHC374DGVRE4?
SN74AHC374DGVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC374DGVRE4 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 SN74AHC374DGVRE4?
For technical support, including SN74AHC374DGVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC374DGVRE4 requirements.
6.How does Aetrix verify that SN74AHC374DGVRE4 is sourced from the original manufacturer or authorized distributors?
All SN74AHC374DGVRE4 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 SN74AHC374DGVRE4 meets industry standards.
7.What is the process for return or replacement of SN74AHC374DGVRE4?
All SN74AHC374DGVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC374DGVRE4, 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 SN74AHC374DGVRE4 part is unused and in its original packaging.
Return procedure for SN74AHC374DGVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AHC374DGVRE4 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…
