CD74HC243MT Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC243MT is a quad bidirectional bus transceiver from Texas Instruments, featuring 3-state outputs and independent output enable for each direction in the HC high-speed CMOS family. Key specs: bidirectional data flow, 50 pF load capacitance, 14-pin SOIC package. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC243MT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5517(MOQ 1)
- 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 CD74HC243MT?
- Quad bidirectional bus transceiver with 3-state outputs for non-interfering shared bus connections
- Independent output enable control for each direction allowing flexible half-duplex and full-duplex bus management
- HC/UH high-speed CMOS family providing fast switching speeds with low power consumption
- 14-pin SOIC (Small Outline IC) surface-mount package suitable for compact PCB designs
What is CD74HC243MT used for?
The CD74HC243MT is used in microprocessor systems, data buses, and backplane interconnects where bidirectional data transfer between different logic sections is required. Its independent directional enables make it ideal for memory interface expansion, I/O port buffering, and bus isolation in embedded and industrial systems. The 3-state output capability ensures multiple transceivers can share a common bus without signal contention.
What are the specifications of CD74HC243MT?
| Pbfree Code | Yes |
| 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) | 0.0078A |
| 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 | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 20ns |
| Propagation Delay (tpd) | 135ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| 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 (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the CD74HC243MT datasheet?
CD74HC243MT Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC243MT?
Compatible alternatives and drop-in replacements for CD74HC243MT:
Bus Transceiver, HC/UH Series, 1-Func, 4-Bit, True Output, CMOS, PDSO14
Frequently Asked Questions
What does bidirectional mean for the CD74HC243MT?
Bidirectional means the CD74HC243MT can transfer data in both directions on the bus — from A-to-B or B-to-A — controlled by direction enable pins. This makes it suitable for bus interfaces where data flows in both directions at different times.
What is the purpose of the independent output enable in the CD74HC243MT?
The CD74HC243MT features independent output enable for each direction, allowing one side to be actively driving while the other is in high-impedance (3-state) mode. This is critical for avoiding bus contention in bidirectional communication systems.
What package does the CD74HC243MT come in?
The CD74HC243MT is available in a 14-pin Small Outline Package (SOIC), designated JESD-30 code R-PDSO-G14. This surface-mount package is compact and widely compatible with standard PCB assembly processes.
What logic family does the CD74HC243MT belong to?
The CD74HC243MT belongs to the HC/UH (High-Speed CMOS) logic family, which offers fast propagation speeds and low quiescent current consumption, making it suitable for battery-powered and high-frequency digital designs.
What are typical applications for the CD74HC243MT?
Typical applications include microprocessor data bus buffering, memory address line sharing, backplane bus interconnects, and I/O expansion in embedded systems where bidirectional 3-state signal routing across 4 lines is needed simultaneously.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1800 | $1.18 |
| 10+ | $0.8520 | $8.52 |
| 25+ | $0.7704 | $19.26 |
| 1000+ | $0.5693 | $569.30 |
| 2500+ | $0.5690 | $1422.47 |
| 6250+ | $0.5517 | $3448.19 |
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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit