CD74AC245EE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74AC245EE4 is an octal bidirectional non-inverting bus transceiver with 3-state outputs and direction control in a 20-pin DIP package. It supports 50 pF load capacitance and operates from 2 V to 5.5 V supply for high-speed bus interfacing. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- CD74AC245EE4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9858(MOQ 151)
- 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 CD74AC245EE4?
- Octal 8-bit bidirectional bus transceiver with direction control pin enabling A-to-B and B-to-A data transfer
- 3-state outputs allow multiple transceivers to share a common bus without contention
- AC logic family drives 50 pF load capacitance at fast switching speeds across 2 V to 5.5 V supply range
What is CD74AC245EE4 used for?
The CD74AC245EE4 is widely used for bidirectional data bus buffering between microprocessors and peripheral chips in embedded control boards, memory interface circuits, and industrial I/O expansion modules. Its 8-bit width and direction control make it ideal for isolating different voltage-domain bus segments while allowing full bidirectional data flow under firmware control. The 20-pin DIP package suits prototyping, repair, and legacy system maintenance where through-hole components are preferred.
What are the specifications of CD74AC245EE4?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | AC |
| JESD-30 Code | R-PDIP-T20 |
| 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 | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| 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 | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| 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) |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the CD74AC245EE4 datasheet?
CD74AC245EE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74AC245EE4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the direction control pin on CD74AC245EE4 manage bidirectional data flow on a shared bus?
The CD74AC245EE4 direction control (DIR) pin selects the data transfer direction: when DIR is high, data flows from the A bus to the B bus across all 8 bits; when DIR is low, data flows from B to A. The output enable (OE) pin places all 8 outputs in a high-impedance 3-state mode when asserted, allowing the transceiver to be disconnected from the bus without loading the signals.
What supply voltage range and load capacitance does CD74AC245EE4 support for 5 V and 3.3 V mixed systems?
The CD74AC245EE4 operates from 2 V to 5.5 V supply voltage, covering both 3.3 V and 5 V digital systems. It drives up to 50 pF of load capacitance per output at full AC family switching speed, making it suitable for standard PCB traces of moderate length. Level-shifting between 3.3 V and 5 V buses requires additional care since the device is not a voltage-translating transceiver.
When is CD74AC245EE4 in a DIP package preferred over SOIC variants for prototyping?
The 20-pin DIP package of CD74AC245EE4 with 2.54 mm through-hole pin pitch is preferred on breadboards and prototype perfboards where SMT soldering is impractical. Field repair of industrial equipment and laboratory bench setups also benefit from the DIP footprint since it can be inserted into standard IC sockets, enabling quick device replacement without soldering in evaluation and debugging environments.
How many bits does CD74AC245EE4 buffer simultaneously and how does this compare to quad transceiver devices?
The CD74AC245EE4 buffers all 8 bits simultaneously in a single octal transceiver, versus 4-bit quad transceivers such as the 74AC125 that handle only 4 signals. Using one CD74AC245EE4 instead of two quad devices reduces component count by half, saving PCB area and simplifying routing for 8-bit data buses common in 8-bit microcontroller and memory interface designs.
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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 |
|---|---|---|
| 151+ | $1.9900 | $300.49 |
| 720+ | $1.7310 | $1246.29 |
| 1000+ | $1.3200 | $1320.00 |
| 10000+ | $1.1800 | $11800.00 |
| 100000+ | $0.9858 | $98580.00 |
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