Overview
The CD74HC243M96 is a high-speed CMOS logic quad-bus transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed for two-way asynchronous communication between data buses and features high-drive-current outputs, enabling high-speed operation even when driving large bus capacitances. The CD74HC243M96 is part of the 74HC series, known for its low power dissipation and speeds comparable to low-power Schottky TTL circuits.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (VCC) | 2 V to 6 V | |
| Operating Temperature (TA) | -55°C to 125°C | |
| Propagation Delay (A to B, B to A) | Typically 7 ns at VCC = 5 V, CL = 15 pF, TA = 25°C | |
| Output High, Low Current | 7.8 mA | |
| Input Capacitance (Ci) | 10 pF | |
| Three-state Output Capacitance (CO) | 20 pF | |
| Power Dissipation Capacitance (Cpd) | 5 pF | |
| Package Type | SOIC-14 | |
| Number of Bits per Element | 4 | |
| Output Type | Push-Pull |
Key Features
- Three-state outputs controlled by OEA and OEB inputs, which also determine the direction of communication.
- Buffered inputs and high-drive-current outputs for high-speed operation.
- Significant power reduction compared to LSTTL logic ICs.
- Wide operating temperature range: -55°C to 125°C.
- Balanced propagation delay and transition times.
- HC types operate from 2 V to 6 V, while HCT types operate from 4.5 V to 5.5 V and are compatible with LSTTL input logic.
- High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V for HC types.
- Can drive 15 LSTTL loads.
Applications
- Two-way asynchronous communication between data buses.
- High-speed data transmission systems.
- Bus drivers in digital systems requiring low power consumption and high speed.
- Embedded systems and microcontrollers where efficient data transfer is crucial.
- Industrial control systems and automation.
Q & A
- What is the primary function of the CD74HC243M96?
The CD74HC243M96 is a quad-bus transceiver with 3-state outputs, designed for two-way asynchronous communication between data buses.
- What is the operating voltage range for the CD74HC243M96?
The device operates from 2 V to 6 V.
- What is the typical propagation delay of the CD74HC243M96?
The typical propagation delay is 7 ns at VCC = 5 V, CL = 15 pF, and TA = 25°C.
- How many LSTTL loads can the CD74HC243M96 drive?
The device can drive up to 15 LSTTL loads.
- What is the operating temperature range of the CD74HC243M96?
The operating temperature range is -55°C to 125°C.
- What type of outputs does the CD74HC243M96 have?
The device has push-pull outputs with three-state capability.
- Is the CD74HC243M96 RoHS compliant?
- What is the package type of the CD74HC243M96?
The device is available in a SOIC-14 package.
- How many bits per element does the CD74HC243M96 support?
The device supports 4 bits per element.
- What are the key advantages of using the CD74HC243M96 over LSTTL logic ICs?
The key advantages include significant power reduction, balanced propagation delay and transition times, and high noise immunity.
