SN74HCT245NIn StockTexas Instruments
SN74HCT245N is an octal bidirectional bus transceiver with 3-state outputs, featuring HCT logic family compatibility, 150pF load capacitance, and 6mA output current. Ideal for bus interface and data buffering. From $0.42, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74HCT245N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4154(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal bidirectional bus transceiver with individual direction control and active-low output enable
- HCT logic family ensures full TTL-compatible input thresholds for seamless 5V system integration
- 3-state outputs support high-impedance mode for effective bus sharing and data multiplexing
- 150pF load capacitance rating with 6mA sink current for robust signal drive capability
- Available in standard DIP-20 package for easy breadboard prototyping and through-hole PCB assembly
Applications
The SN74HCT245N is widely used in microprocessor and microcontroller bus interface circuits where bidirectional data transfer between subsystems is required. It is commonly deployed in memory bus buffering, I/O port expansion, and backplane data bus applications in industrial control and embedded systems. Its TTL-compatible inputs also make it suitable for interfacing 5V logic buses in legacy system upgrades and mixed-voltage designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | HCT |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 150pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 28ns |
| Propagation Delay (tpd) | 38ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HCT245N:
Frequently Asked Questions
What is the SN74HCT245N and what does it do?
The SN74HCT245N is an octal bidirectional bus transceiver from Texas Instruments with 3-state outputs. It features 8 bidirectional data channels, a common direction control pin, and an active-low output enable pin, allowing data to flow in either direction on a shared bus while supporting high-impedance state for bus sharing.
What are the key electrical specifications of the SN74HCT245N?
The SN74HCT245N operates on a 5V supply with HCT-family logic levels compatible with TTL inputs. It supports a maximum load capacitance of 150pF, a maximum output low current (IOL) of 6mA, and meets JESD-30 package code R-PDIP-T20 (20-pin DIP). It is RoHS compliant with JESD-609 code e4.
What applications is the SN74HCT245N suitable for?
The SN74HCT245N is ideal for microprocessor data bus buffering, memory interface circuits, I/O port expansion, and backplane bus drivers. Its bidirectional capability and 3-state outputs make it well-suited for any application requiring controlled data transfer between two buses or subsystems in 5V digital systems.
What package does the SN74HCT245N come in and are there SMD alternatives?
The SN74HCT245N comes in a 20-pin dual in-line package (DIP-20), suitable for through-hole PCB assembly and prototyping. For surface-mount designs, Texas Instruments offers SMD alternatives such as the SN74HCT245DW (SOIC-20) and SN74HCT245PW (TSSOP-20) with identical functionality.
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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 |
|---|---|---|
| 1+ | $1.0530 | $1.05 |
| 10+ | $0.8070 | $8.07 |
| 20+ | $0.5700 | $11.40 |
| 25+ | $0.4212 | $10.53 |
| 1000+ | $0.4154 | $415.40 |
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