CD74HC243MG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC243MG4 is a quad non-inverting bidirectional bus transceiver from Texas Instruments in a 14-pin SOIC package rated up to 6 V. It features independent output enable for each direction, 50 pF load capacitance, and HC-family CMOS technology for reliable low-power bidirectional data transfer. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC243MG4 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
- Quad non-inverting bidirectional transceiver with independent output enable per direction for flexible bus control
- HC/UH CMOS family rated up to 6 V supply for wide voltage compatibility in 5 V and lower systems
- Independent direction control enables simultaneous or selective one-way data flow without additional logic
- 14-pin SOIC surface-mount package with 50 pF load capacitance for compact and reliable PCB integration
Applications
The CD74HC243MG4 is used in bidirectional bus interfacing applications such as microprocessor data bus buffering, memory interface transceivers, and signal level isolation between system modules where independent directional control is needed. Its non-inverting quad configuration and independent enables make it suitable for industrial control systems, embedded processors, and communication boards requiring reliable two-way data routing without signal inversion.
Specifications
| YTEOL | 0 |
| Additional Feature | WITH INDEPENDENT OUTPUT ENABLE FOR EACH DIRECTION |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 27ns |
| Propagation Delay (tpd) | 135ns |
| 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 |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What makes the CD74HC243MG4 different from standard bus transceivers?
The CD74HC243MG4 provides independent output enable control for each direction of data flow, allowing designers to selectively enable or disable transmission in either direction without affecting the other. This flexibility simplifies bus arbitration and avoids bus contention in bidirectional data transfer applications.
What is the supply voltage rating and load capacitance of the CD74HC243MG4?
The device operates up to 6 V supply voltage and is rated for a load capacitance of 50 pF, ensuring adequate signal drive for standard PCB bus traces in 5 V digital systems. The HC family guarantees reliable operation across typical industrial and commercial temperature ranges.
What package and pin count does the CD74HC243MG4 use?
The CD74HC243MG4 is housed in a 14-pin SOIC (Small Outline Integrated Circuit) surface-mount package (JESD-30 code R-PDSO-G14), making it suitable for automated PCB assembly and compact board layouts in space-constrained designs.
Is the CD74HC243MG4 a non-inverting or inverting transceiver?
The CD74HC243MG4 is a non-inverting transceiver, meaning the logic level on the input is faithfully reproduced on the output without inversion. This simplifies system design when direct signal translation between two bus segments is required without changing signal polarity.
What are typical use cases for the CD74HC243MG4?
Typical use cases include microprocessor data bus transceivers, memory bus isolation, inter-board communication buffers, industrial automation data paths, and any application requiring quad bidirectional signal buffering with independent direction control up to 6 V supply.
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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.
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