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STMicroelectronics M74HC377RM13TR
- Part No.:
- M74HC377RM13TR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
M74HC377RM13TR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:280
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Product details
Overview
M74HC377RM13TR from STMicroelectronics is a high-speed CMOS octal D-type flip-flop with edge-triggered clock input, active-low enable (G), 8-bit parallel data storage, and operation across 2V–6V supply. It delivers tPLH/tPHL ≈ 13 ns (typ.) at VCC = 6V, fMAX = 66 MHz (typ.), and IOH/IOL ≥ 4 mA, used in synchronous data latching for industrial control bus interfaces.
For engineers reviewing the M74HC377RM13TR datasheet, M74HC377RM13TR pinout, M74HC377RM13TR application, or M74HC377RM13TR equivalent, key selection criteria include positive-edge clock triggering, low-power quiescent current (ICC ≤ 4 µA), wide voltage range compatibility, and TSSOP-20 package suitability for space-constrained PCB layouts.
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of CLOCK only when G is low; inputs are ignored when G is high or during clock steady states. Its C2MOS silicon gate process enables symmetrical output drive (|IOH| = IOL ≥ 4 mA) and high noise immunity (VNIH/VNIL ≥ 28% VCC).
Propagation delays are balanced (tPLH ≅ tPHL), setup/hold times are specified down to 5 ns (VCC = 6V), and AC performance is characterized at CL = 50 pF with fast input rise/fall times (tr/tf ≤ 400 ns at VCC = 6V), supporting reliable timing in multi-stage register chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 6 V - supports mixed-voltage system interfacing without level shifters |
| fMAX | 66 MHz (typ.) at VCC = 6 V - enables high-throughput data capture in real-time control loops |
| tPLH / tPHL | 13 ns (typ.) at VCC = 6 V - ensures predictable, matched delay paths for timing-critical register stages |
| IOH / IOL | ≥ 4 mA (min.) - drives standard TTL loads and multiple CMOS inputs directly |
| ICC (Quiescent) | 4 µA (max.) at TA = 25°C - minimizes standby power in battery-backed or energy-sensitive systems |
| VNIH / VNIL | ≥ 28% VCC (min.) - provides robust noise margin against EMI in industrial environments |
| ts (D to CK) | 5 ns (min.) at VCC = 6 V - allows tight data-to-clock timing windows in high-speed bus designs |
Pinout & Package
TSSOP-20 package: 6.5 mm × 4.4 mm body, 0.65 mm pitch, thin-profile surface-mount with exposed pad not present; RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G | Active-low global enable - disables all outputs (Q holds last state) when high |
| 11 | CLOCK | Positive-edge triggered clock - samples D inputs only on rising transition |
| 10 | GND | Reference ground - must be low-impedance return path for all switching currents |
| 20 | VCC | Power supply - decoupling capacitor (100 nF) required within 5 mm of this pin |
| 3,4,7,8,13,14,17,18 | 1D–8D | Data inputs - asynchronous; sampled only when G = L and CLOCK rises |
| 2,5,6,9,12,15,16,19 | 1Q–8Q | Registered outputs - retain latched values until next valid clock edge under G = L |
Key Features
| Feature | Design Value |
|---|---|
| Edge-triggered clock | Positive-going edge detection ensures deterministic sampling independent of pulse width |
| Low input leakage | ±0.1 µA max. at VCC = 6 V - prevents unintended logic state drift in high-impedance nodes |
| Balanced propagation | tPLH ≅ tPHL - eliminates duty-cycle distortion in feedback or cascaded register paths |
| ESD-protected inputs | Withstands ±2 kV HBM - reduces need for external transient suppression in assembly |
| Wide temperature range | Operates from –55°C to +125°C - qualified for under-hood automotive and industrial motor control |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Latching sensor status signals (e.g., door open/closed, seatbelt buckle) before CAN message framing. IC Role / Device Role / Timing Role: Synchronous data register capturing parallel switch inputs on rising clock edge under microcontroller control. Use Value: Ensures glitch-free sampling with 5 ns setup time margin at 6V supply, eliminating metastability in noisy vehicle electrical environments. | Use Scenario: Buffering PWM commands from MCU to high-side driver ICs controlling headlight intensity. IC Role / Device Role / Timing Role: Output latch holding stable 8-bit brightness code while MCU prepares next frame. Use Value: Delivers 4 mA drive strength per Q output to directly interface with driver enable pins, reducing component count vs. discrete buffers. |
| Test Equipment Digital Pattern Generator | Medical Infusion Pump Controller |
Use Scenario: Storing test vector sequences for automated functional testing of digital ASICs. IC Role / Device Role / Timing Role: High-speed parallel register stage in pattern memory address/data path with 66 MHz clock support. Use Value: Enables 15 ns typical propagation delay matching across all 8 bits, preserving signal integrity in multi-channel timing applications. | Use Scenario: Isolating microcontroller GPIOs from motor driver circuitry in infusion pump actuator control. IC Role / Device Role / Timing Role: Safety-critical output latch preventing spurious motor activation during MCU reset or brownout. Use Value: Active-low enable (G) allows hardware-level disable during fault conditions, meeting IEC 62304 Class C software safety requirements. |
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 |
|---|---|---|---|
| SN74HC377N | DIP-20 package; higher ICC (80 µA max. over temp); identical AC specs at VCC = 6V | Suitable for prototyping or through-hole production; lacks TSSOP thermal performance | Select for breadboard evaluation or legacy board rework where footprint change is impractical |
| 74LVX377MTCX | Lower VCC range (2.0–3.6 V); faster tPLH (9 ns typ. at 3.3 V); 3.6 V absolute max rating | Optimized for 3.3 V-only systems; incompatible with 5 V logic domains | Choose only when full system operates at 3.3 V and sub-10 ns timing is required |
Compared with SN74HC377N and 74LVX377MTCX, M74HC377RM13TR uniquely combines TSSOP-20 compactness, 2–6 V flexibility, and <4 µA quiescent current - making it optimal for volume-manufactured, thermally constrained, mixed-voltage embedded controllers.
Availability
M74HC377RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for M74HC377RM13TR 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, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
M74HC377RM13TR belongs to the M74HC high-speed CMOS logic family, engineered for low-power, high-noise-immunity digital interfacing in harsh-environment control systems.
FAQ
Is M74HC377RM13TR pin-compatible with standard 74LS377?
Yes - it matches the 74LS377 pinout and logic function but operates at higher speed (66 MHz vs. ~30 MHz) and lower power (4 µA vs. ~25 mA quiescent). Voltage levels differ: HC logic uses VCC-referenced thresholds, so direct 5 V TTL interfacing requires checking VIH/VIL margins per datasheet Table 4.
What is the maximum capacitive load this device can drive reliably?
Driving CL ≤ 50 pF is validated in AC specifications (tPLH, fMAX). For heavier loads, propagation delay increases linearly - e.g., at CL = 100 pF, tPLH degrades by ~25% versus 50 pF. Use series termination or buffer stages if driving >75 pF or long traces.
Does the enable input (G) affect output impedance when disabled?
No - when G is high, outputs remain in their last latched state (high-impedance is not asserted). The Q pins maintain static CMOS output drive capability (IOH/IOL ≥ 4 mA) regardless of G state, enabling wired-OR or bus-hold configurations without external pull-ups.
Can this device operate at 1.8 V supply?
No - the recommended minimum VCC is 2.0 V per datasheet Section 3. Below 2.0 V, DC parameters (VOH, VOL, VIH, VIL) are not guaranteed, and AC performance (fMAX, tPLH) collapses. For 1.8 V systems, consider the 74LVC377 or similar LVCMOS-family devices.
M74HC377RM13TR 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:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 66 MHz
- Max Propagation Delay @ V, Max CL:
- 24ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- 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
M74HC377RM13TR FAQ
1.How can I place an order for M74HC377RM13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC377RM13TR 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 M74HC377RM13TR reliable?
The price and inventory of M74HC377RM13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC377RM13TR is usually 5 days.
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M74HC377RM13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC377RM13TR 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 M74HC377RM13TR?
For technical support, including M74HC377RM13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC377RM13TR requirements.
6.How does Aetrix verify that M74HC377RM13TR is sourced from the original manufacturer or authorized distributors?
All M74HC377RM13TR 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 M74HC377RM13TR meets industry standards.
7.What is the process for return or replacement of M74HC377RM13TR?
All M74HC377RM13TR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC377RM13TR, 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 M74HC377RM13TR part is unused and in its original packaging.
Return procedure for M74HC377RM13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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