CD74HC377PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC377PWG4 is an 8-bit positive-edge-triggered D flip-flop register with clock-enable (hold mode) operating up to 20 MHz with 5.2 mA output drive in a 20-pin TSSOP package. It supports a 2 V to 6 V supply range for broad HC-family compatibility. Available from stock worldwide with RoHS-compliant e4 Pb-free finish.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC377PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5993(MOQ 630)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC377PWG4?
- 8-bit D-type positive-edge-triggered register with clock-enable (hold mode) for selective latching, reducing CPU intervention in bus-interface and pipeline register designs
- Maximum 20 MHz clock frequency with 50 pF load tolerance and 5.2 mA output drive for reliable data storage in high-speed HC-family logic systems
- Compact 20-pin TSSOP package (R-PDSO-G20) with 2 V to 6 V supply range and e4 Pb-free finish enabling compliant SMT assembly across 3.3 V and 5 V platforms
What is CD74HC377PWG4 used for?
The CD74HC377PWG4 stores 8-bit parallel data in microcontroller bus interfaces, output latches, and pipeline register stages where the clock-enable hold mode prevents unnecessary register updates. Its 20 MHz clock speed and 5.2 mA output drive support direct connection to data buses shared with SRAM, display controllers, and I/O expanders. The 20-pin TSSOP footprint minimizes board real estate in space-sensitive embedded controller designs.
What are the specifications of CD74HC377PWG4?
| YTEOL | 0 |
| Additional Feature | WITH HOLD MODE |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.0052A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 53ns |
| Propagation Delay (tpd) | 265ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 23MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the CD74HC377PWG4 datasheet?
CD74HC377PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC377PWG4?
Compatible alternatives and drop-in replacements for CD74HC377PWG4:
D Flip-Flop, HC/UH Series, 1-Func, Positive Edge Triggered, 8-Bit, True Output, CMOS, PDSO20
Frequently Asked Questions
What is the maximum clock frequency and output current drive of CD74HC377PWG4?
The CD74HC377PWG4 clocks at up to 20 MHz and provides a maximum output sink current of 5.2 mA per pin with a 50 pF load capacitance rating. At 5 V this drive strength is sufficient to directly fan out to 2 to 4 standard HC-family inputs without a buffer stage, which simplifies bus register designs in embedded controllers.
How does the clock-enable (hold mode) feature of CD74HC377PWG4 reduce MCU overhead in an 8-bit output latch application?
When the clock-enable input is deasserted, the 8 flip-flops ignore rising clock edges and hold their current state indefinitely. This lets the MCU update only selected register bytes without toggling unused outputs, which is critical in motor-control output stages where holding a PWM duty word stable for multiple clock cycles reduces switching noise and CPU interrupt load.
Is CD74HC377PWG4 compatible with both 3.3 V and 5 V microcontroller I/O in mixed-supply designs?
The HC family operates from 2 V to 6 V, so the CD74HC377PWG4 functions at both 3.3 V and 5 V supply rails. At 3.3 V the input high threshold is approximately 2.31 V, meaning 3.3 V CMOS outputs drive it reliably. Driving from a 5 V system into a 3.3 V CD74HC377PWG4 requires level-shifting to avoid exceeding the 6 V absolute maximum on the input pins.
What package and tape-and-reel options are available for CD74HC377PWG4 in volume PCB assembly?
The CD74HC377PWG4 uses a 20-pin TSSOP package (JESD-30 code R-PDSO-G20) with a 0.65 mm pin pitch, suited for standard SMT pick-and-place with a 3 mm tape-and-reel. The PW suffix denotes TSSOP packaging and the G4 suffix indicates green (Pb-free e4) tape-and-reel, compatible with 260 °C reflow profiles used in RoHS-compliant production lines.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 630+ | $0.5992 | $377.53 |
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