CD74HC573MG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC573MG4 is a Texas Instruments 8-channel transparent D-type latch with 3-state outputs, operating from 2 V to 6 V with 6 mA sink current per output and 50 pF load capacitance rating, housed in a 20-pin SOIC package for digital bus interface applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC573MG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3140(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-channel transparent D-type latch with 3-state outputs for bus isolation and data holding
- Active-low output enable control (OE) for standard bus-driver compatibility
- HC/UH family CMOS logic with 2 V to 6 V supply range and TTL-compatible inputs
- 6 mA output sink/source current and 50 pF load capacity for driving standard logic buses
- 20-pin SOIC package (RoHS e4) with broadside pin arrangement for direct address/data bus routing
Applications
Used in microprocessor and microcontroller address/data bus demultiplexing where 8 bits of data must be latched and held stable for downstream peripherals or memory chips. The CD74HC573MG4 is a staple in FPGA interface boards, legacy embedded controllers, and industrial PLCs that rely on 74-series bus drivers to separate multiplexed bus signals into parallel byte-wide data paths. Its 3-state outputs allow multiple latches to share a common bus without contention.
Specifications
| YTEOL | 0 |
| Additional Feature | BROADSIDE VERSION OF 373 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| 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) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | HIGH LEVEL |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC573MG4:
Frequently Asked Questions
How does the CD74HC573MG4 differ from the CD74HC373 in PCB layout and pin assignment?
The CD74HC573MG4 is the broadside (pinout-straight) version of the CD74HC373. All 8 data inputs are on one side of the 20-pin SOIC and all 8 outputs on the other, simplifying PCB routing for parallel bus connections compared to the staggered I/O arrangement of the 373.
What voltage and current limits govern the CD74HC573MG4's output drive strength?
The CD74HC573MG4 operates from a 2 V to 6 V supply and is rated for 6 mA maximum sink current per output channel. It is specified with a 50 pF load capacitance, making it suitable for driving standard HC/TTL logic inputs at propagation delays in the low nanoseconds range.
Can the CD74HC573MG4 interface directly with both 3.3 V and 5 V logic systems without level translation?
When powered at 3.3 V, the CD74HC573MG4 accepts TTL-compatible input thresholds and can drive 3.3 V logic. At 5 V supply, it meets 5 V CMOS levels. Mixing 3.3 V and 5 V on the same bus without level translation is not recommended, but the wide 2 V to 6 V supply range simplifies single-voltage board designs.
How should procurement teams evaluate lifecycle risk for the CD74HC573MG4 in long-run industrial designs?
The 74HC573 is a commodity logic family manufactured by multiple vendors including Texas Instruments, Nexperia, and ON Semiconductor, meaning second-source availability is high. Buyers can reduce end-of-life risk by maintaining a qualified alternate vendor list and monitoring distributor stock for the 20-pin SOIC footprint across suppliers.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4710 | $0.47 |
| 12+ | $0.3925 | $4.71 |
| 52+ | $0.3140 | $16.33 |
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