CD74HC377PWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC377PWRG4 is an 8-bit D-type flip-flop bus interface IC from Texas Instruments in a 20-pin TSSOP package. It operates on positive clock edges with a clock enable input and supports frequencies up to 20 MHz at 50 pF load. Available on tape-and-reel for high-volume automated assembly in digital logic designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC377PWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit positive-edge-triggered D flip-flop with clock enable for selective data latching
- Operates up to 20 MHz at 50 pF load capacitance for high-speed bus interface applications
- HC CMOS logic family compatible with 2 V to 6 V supply range and standard TTL inputs
- 20-pin TSSOP package on tape-and-reel for efficient automated SMT assembly
Applications
CD74HC377PWRG4 serves as an 8-bit data bus register or output latch in microprocessor and microcontroller bus expansion designs, capturing and holding 8 parallel data lines on each positive clock edge. Its clock enable feature allows selective storage of data without continuous clocking, making it ideal for address decoding and peripheral I/O port expansion in embedded systems. The device is also widely used in FPGA prototyping boards and glue logic circuits that need a fast, low-power 8-bit storage element between data buses.
Specifications
| 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 | TR |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How fast can CD74HC377PWRG4 reliably clock data into its 8 flip-flop stages?
CD74HC377PWRG4 supports a maximum clock frequency of 20 MHz when driving a 50 pF load capacitance. At a lower supply voltage of 2 V, the maximum frequency decreases to approximately 5 MHz. For most 8-bit bus interface applications running below 10 MHz, the device operates well within its timing budget with standard logic-level inputs.
What is the output sink current capability of each output on CD74HC377PWRG4?
Each output of CD74HC377PWRG4 can sink up to 5.2 mA (Max I(ol) = 0.0052 A) at the specified output low voltage. This is sufficient to drive standard CMOS inputs and low-current LEDs directly, though driving heavier loads or multiple fan-out lines may require a buffer stage to maintain valid logic levels.
How does the clock enable pin on CD74HC377PWRG4 help in multi-register bus designs?
The clock enable pin (active low) on CD74HC377PWRG4 allows the 8 flip-flops to hold their current state even when clock edges arrive, without requiring external gating logic. This lets designers connect multiple CD74HC377PWRG4 devices to a shared 8-bit data bus and enable only the selected register on each cycle, simplifying address-decoded output port expansion with fewer external components.
Can CD74HC377PWRG4 interface directly with 3.3 V microcontroller GPIOs while running at 5 V?
Yes. When CD74HC377PWRG4 is powered at 5 V, its input high threshold is typically below 3.15 V at worst case for the HC family, so 3.3 V GPIO outputs from a microcontroller can drive the inputs reliably in most operating conditions. The outputs will swing to 5 V logic levels, so a level-shifter is needed on the output side if the receiving device is not 5 V tolerant.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
Why Buy from FindMyChip
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”