CD74AC245MIn StockTexas Instruments
CD74AC245M is an 8-bit non-inverting CMOS bus transceiver with direction control, operating from 1.5V to 5.5V supply, featuring bidirectional data flow with 50pF load capacitance and 24mA output current. From $0.5275, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74AC245M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5275(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-bit non-inverting bidirectional bus transceiver with common direction control pin
- Wide supply voltage range: 1.5V to 5.5V for mixed-voltage system compatibility
- High output drive capability: 24mA sink current for driving heavy capacitive loads
- AC-series CMOS logic with high-speed switching and low power consumption
- 20-pin SOIC package with industry-standard pinout for easy PCB integration
Applications
The CD74AC245M is widely used in microprocessor and microcontroller bus interface applications where bidirectional data buffering between two buses is required. It is ideal for level translation, bus isolation, and data bus expansion in industrial control systems, communication equipment, and embedded computing platforms. The device also serves as a line driver in memory interface circuits and backplane bus systems where signal integrity and drive strength are critical.
Specifications
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | AC |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| 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 | SOP20,.4 |
| 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 | 11.9ns |
| Propagation Delay (tpd) | 106ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 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 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74AC245M:
Frequently Asked Questions
What is the operating voltage range of the CD74AC245M?
The CD74AC245M operates over a supply voltage range of 1.5V to 5.5V, making it compatible with both 3.3V and 5V logic systems. This wide range allows it to interface between mixed-voltage environments without additional level-shifting components.
How does the direction control work on the CD74AC245M?
The CD74AC245M features a common direction control (DIR) pin that determines the data flow direction across all 8 bits simultaneously. When DIR is high, data flows from the A bus to the B bus; when DIR is low, data flows from B to A. An output enable (OE) pin puts all outputs in a high-impedance state when asserted high.
What are typical applications for the CD74AC245M bus transceiver?
The CD74AC245M is commonly used in microprocessor bus buffering, memory interface circuits, data bus isolation, and backplane communication systems. It is also employed in industrial controllers, PLC I/O modules, and embedded systems where bidirectional 8-bit data transfer between two logic buses is needed.
What package does the CD74AC245M come in and what is its pin count?
The CD74AC245M is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package, designated as R-PDSO-G20. The SOIC package is suitable for surface-mount assembly and is widely available, offering a compact footprint for high-density PCB designs.
What is the price and availability of the CD74AC245M?
The CD74AC245M is priced from approximately $0.5275 per unit and is available in stock from multiple distributors worldwide. Texas Instruments manufactures this device and it supports worldwide shipping, making it accessible for both prototype and production quantities.
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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+ | $0.6330 | $0.63 |
| 9+ | $0.5275 | $4.75 |
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