CD74AC373EE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74AC373EE4 is an 8-bit transparent D-type latch with 3-state outputs from Texas Instruments, housed in a 20-pin plastic DIP package. It features active-low output enable control, 50pF load capacitance support, and 12mA output low current drive in the high-speed AC CMOS family. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74AC373EE4 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
What are the key features of CD74AC373EE4?
- 8-bit transparent D-type latch with 3-state outputs and active-low output enable, ideal for bus-oriented data storage and transfer applications
- AC-series high-speed CMOS logic family with 50pF load capacitance per output, offering fast switching speeds and compatibility with both TTL and CMOS logic levels
- 20-pin plastic DIP package (JESD-30 R-PDIP-T20) for easy through-hole PCB assembly and prototyping, with RoHS-compliant (e4) construction
- Unidirectional data flow with enable-low control simplifying microprocessor bus expansion and data bus isolation designs
What is CD74AC373EE4 used for?
The CD74AC373EE4 is widely used in microprocessor and microcontroller systems for address latching, data bus buffering, and I/O port expansion where transparent latching with tri-state outputs is required. It is also applied in memory interface circuits, FPGA peripheral logic, and PLD-based designs to hold and drive 8-bit parallel data onto shared buses. Its DIP package makes it particularly suitable for prototyping, education, and legacy system repair or replacement.
What are the specifications of CD74AC373EE4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | AC |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.012A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| 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 |
| Prop. Delay@Nom-Sup | 11.9ns |
| Propagation Delay (tpd) | 150ns |
| Qualification Status | Not Qualified |
| 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 |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | HIGH LEVEL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the CD74AC373EE4 datasheet?
CD74AC373EE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74AC373EE4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the function of the output enable pin on the CD74AC373EE4?
The CD74AC373EE4 has an active-low output enable (OE) pin that controls the 3-state outputs. When OE is low, the latched data is driven onto the output pins. When OE is high, all outputs enter a high-impedance state, allowing multiple devices to share the same data bus without contention.
What is the difference between transparent mode and latch mode in the CD74AC373EE4?
In transparent mode (latch enable high), the Q outputs follow the D inputs in real time. When the latch enable transitions low, the last data state is captured and held at the outputs regardless of subsequent input changes, providing stable data storage for downstream circuits.
What logic family is the CD74AC373EE4 part of and what are its electrical ratings?
The CD74AC373EE4 belongs to the AC (Advanced CMOS) high-speed logic family operating from 2V to 6V supply. It supports a load capacitance of 50pF per output and a maximum output low current (IOL) of 12mA, making it compatible with standard CMOS and TTL-level logic systems.
Is the CD74AC373EE4 RoHS compliant?
Yes, the CD74AC373EE4 is RoHS compliant with a JEDEC JESD-609 code of e4 (Pb-free), making it suitable for lead-free PCB assembly processes and compliant with current environmental regulations for electronic components.
What are typical applications for the CD74AC373EE4?
Typical applications include address bus latching in microprocessor systems, data bus isolation, I/O port expansion, memory interface buffering, and parallel data storage in embedded systems, industrial controllers, and digital logic boards requiring 8-bit transparent latching with bus-drive capability.
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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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