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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
Related Guides
CDCE913PWR Programmable Clock Synthesizer Design Guide
Complete design guide for the CDCE913PWR clock synthesizer: VCO range, I2C programming, decoupling, and layout best practices for embedded systems.
May 22, 2026
OPA4277MDTEP Precision Quad Op-Amp Selection Guide: How to Choose the Right Variant
How to choose the right OPA4277 quad precision op-amp variant—OPA4277MDTEP vs UA—covering offset voltage, CMRR, supply range, and temperature grade.
May 22, 2026
SN74LVC14APWR Hex Schmitt-Trigger Inverter: Application Note and Design Guide
Complete design guide for the SN74LVC14APWR hex Schmitt-trigger inverter: thresholds, decoupling, oscillator design, package selection, and common pitfalls.
May 21, 2026
TPS62841DGRR Buck Converter Selection Guide: Ultra-Low 60 nA IQ for Battery-Powered IoT
How to choose the right TPS62841 variant for IoT, wearables, and wireless sensors: quiescent current, voltage range, package, and application examples.
May 21, 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
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.”