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STMicroelectronics M74HC374RM13TR
- Part No.:
- M74HC374RM13TR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
M74HC374RM13TR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:662
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Product details
Overview
M74HC374RM13TR from STMicroelectronics is a high-speed CMOS octal D-type flip-flop with non-inverting 3-state outputs, designed for synchronous data latching in bus-oriented systems. It operates from 2V to 6V, delivers 90MHz max clock frequency at VCC = 6V, features symmetrical 6mA output drive, and supports industrial temperature range (–55°C to +125°C) in TSSOP-20 package.
For engineers reviewing the M74HC374RM13TR datasheet, M74HC374RM13TR pinout, M74HC374RM13TR application, or M74HC374RM13TR equivalent, key selection criteria include 3-state output enable timing (tPZL/tPLZ ≤ 35ns @6V), low 4µA quiescent current, input noise immunity (28% VCC), balanced propagation delays (tPLH ≅ tPHL), and pin compatibility with standard 74-series 374 logic.
Technical Context
The M74HC374RM13TR implements eight edge-triggered D-type flip-flops sharing a common clock (CK) and active-low 3-state output enable (OE). Its sub-micron C2MOS process enables rail-to-rail input voltage tolerance (0 to VCC) and robust ESD protection on all pins.
Internal operation remains fully functional during 3-state output disable - data can be latched or retained regardless of OE state. Propagation delay symmetry (tPLH ≅ tPHL) and fast transition times (≤15ns @6V) support clean signal integrity in high-speed digital buses and address/data latching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 6V - supports mixed-voltage system interfacing and battery-powered logic |
| fMAX | 90MHz (typ.) @ VCC = 6V - enables high-throughput data capture in fast control loops |
| tPLH / tPHL | 13ns / 13ns (typ.) @ VCC = 6V, CL = 50pF - ensures deterministic setup/hold timing for synchronous bus designs |
| IOH / IOL | –6mA / +6mA (min.) - drives standard TTL loads and multiple CMOS inputs without buffering |
| ICC (Quiescent) | 4µA (max.) @ TA = 25°C - minimizes standby power in always-on embedded controllers |
| VIH / VIL | 4.2V / 1.8V (min./max.) @ VCC = 6V - provides 28% VCC noise margin for reliable logic-level discrimination |
| tPZL / tPLZ | 11ns / 13ns (typ.) @ VCC = 6V - enables rapid bus turnaround in bidirectional data transfer protocols |
Pinout & Package
TSSOP-20 (Thin Shrink Small Outline Package), 0.65mm pitch, 6.5mm × 4.4mm body, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low 3-state output enable | Asserting high disables all Q0–Q7 outputs into high-impedance; does not affect internal latch state |
| 2,5,6,9,12,15,16,19 (Q0–Q7) | Non-inverting 3-state outputs | Reflect D-input states on CK rising edge; tri-stated when OE = HIGH |
| 3,4,7,8,13,14,17,18 (D0–D7) | Data inputs | Synchronously sampled on CK rising edge; unaffected by OE state |
| 11 (CK) | Clock input | Rising-edge triggered; minimum pulse width 6ns @6V ensures reliable edge detection |
| 10 (GND) | Ground reference | Return path for all input/output currents; must be low-inductance connection |
| 20 (VCC) | Positive supply | Power rail for logic core and output drivers; bypass capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| 3-state output control | Independent OE pin allows dynamic bus sharing without external bus transceivers |
| Symmetrical output drive | Matched |IOH| = IOL = 6mA (min.) eliminates skew in bidirectional data paths |
| High noise immunity | VIH/VIL thresholds fixed at 28% VCC margin ensure robust operation in electrically noisy environments |
| Low-power latching | 4µA max ICC at 25°C enables use in energy-constrained microcontroller peripherals and sensor interfaces |
| Wide temperature range | Specified from –55°C to +125°C supports automotive under-hood and industrial motor-control applications |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Latching parallel sensor inputs (e.g., door switch status, seat position) before serial transmission to MCU. IC Role / Device Role / Timing Role: Synchronous data register holding 8-bit status word on rising clock edge; OE used for time-multiplexed bus access. Use Value: Enables deterministic sampling of asynchronous mechanical inputs while minimizing MCU GPIO usage via shared data bus. | Use Scenario: Isolating and buffering LIN or CAN subsystem signals from main controller during sleep/wake transitions. IC Role / Device Role / Timing Role: Level-shifting and bus-isolation register; OE synchronized with power-mode control to prevent backfeeding. Use Value: Prevents spurious wake events and ensures clean power-state transitions across vehicle domains. |
| Test Equipment Digital Pattern Generator | Medical Diagnostic Imaging Interface |
Use Scenario: Generating precise, glitch-free stimulus waveforms for IC functional testing using FPGA-controlled parallel output. IC Role / Device Role / Timing Role: High-speed output latch synchronizing FPGA data to external test head; tPLH/tPHL matching reduces timing uncertainty. Use Value: Achieves <±1ns output skew across 8-bit bus, critical for setup/hold compliance in ATE applications. | Use Scenario: Interfacing FPGA-based image processing pipeline to legacy analog video DACs requiring parallel pixel data bursts. IC Role / Device Role / Timing Role: Pixel-data buffer with 3-state outputs enabling seamless handoff between acquisition and display phases. Use Value: Eliminates need for external bus switches, reducing BOM count and PCB area in space-constrained imaging modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC374PWR | Same logic function and pinout; slightly higher tPLH/tPHL (15ns typ. @6V); 20-pin TSSOP, same footprint | Qualified per AEC-Q100 Grade 2; preferred for automotive production where qualification traceability is mandatory | Select when AEC-Q100 compliance is contractually required and identical timing margins exist |
| 74VHC374FT | Higher fMAX (120MHz typ. @5V); lower CPD (35pF vs 47pF); different VCC range (2V–5.5V) | Optimized for ultra-low power and high-speed portable instrumentation; not rated beyond +85°C | Select when operating above 85°C is unnecessary and sub-10ns propagation is critical |
Compared with SN74HC374PWR and 74VHC374FT, the M74HC374RM13TR offers broader temperature coverage (–55°C to +125°C), tighter propagation delay symmetry, and superior noise immunity - making it optimal for harsh-environment industrial control and extended-temperature test equipment.
Availability
M74HC374RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical diagnostic imaging interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for M74HC374RM13TR 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, designing and manufacturing silicon solutions for smart driving, power management, sensing, connectivity, and microcontrollers.
The M74HC374RM13TR belongs to ST's high-speed HC logic family, engineered for robust performance in industrial automation, automotive subsystems, and test instrumentation where reliability, timing precision, and wide supply voltage tolerance are essential.
FAQ
What is the maximum clock frequency supported by M74HC374RM13TR?
The M74HC374RM13TR supports a maximum clock frequency of 90MHz (typical) at VCC = 6V and CL = 50pF. At VCC = 4.5V, fMAX drops to 75MHz (typ.), and at VCC = 2.0V, it is 18MHz (typ.). These values are measured under specified AC test conditions and assume proper PCB layout with decoupling capacitors.
Can OE be toggled while the clock is active without corrupting internal latch states?
Yes. The OE input controls only the output drivers and has no effect on the internal flip-flop operation. Data can be latched on the rising edge of CK, retained, or overwritten - all while OE is HIGH or LOW. This allows safe bus arbitration and dynamic output gating without disrupting data integrity.
Is M74HC374RM13TR compatible with 5V TTL logic levels?
Yes - at VCC = 5V, VIH = 3.15V (min.) and VIL = 1.35V (max.), which exceed standard TTL thresholds (2.0V/0.8V). Outputs drive VOH ≥ 4.4V and VOL ≤ 0.26V at IO = ±6mA, ensuring full interfacing with 5V TTL loads without level shifters.
What is the thermal resistance (θJA) for the TSSOP-20 package?
The datasheet does not specify θJA for M74HC374RM13TR in TSSOP-20. However, typical θJA for ST's TSSOP-20 packages with standard JEDEC 2-layer board layout is ~160°C/W. For thermal design, use the absolute maximum power dissipation (500mW at 65°C, derated linearly to 300mW at 85°C) and measure junction temperature in situ.
M74HC374RM13TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 90 MHz
- Max Propagation Delay @ V, Max CL:
- 32ns @ 6V, 150pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
M74HC374RM13TR FAQ
1.How can I place an order for M74HC374RM13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC374RM13TR 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 M74HC374RM13TR reliable?
The price and inventory of M74HC374RM13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC374RM13TR is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC374RM13TR transactions.
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4.How is shipping managed for M74HC374RM13TR?
M74HC374RM13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC374RM13TR 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 M74HC374RM13TR?
For technical support, including M74HC374RM13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC374RM13TR requirements.
6.How does Aetrix verify that M74HC374RM13TR is sourced from the original manufacturer or authorized distributors?
All M74HC374RM13TR 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 M74HC374RM13TR meets industry standards.
7.What is the process for return or replacement of M74HC374RM13TR?
All M74HC374RM13TR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC374RM13TR, 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 M74HC374RM13TR part is unused and in its original packaging.
Return procedure for M74HC374RM13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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