Key facts
- Brand
- Fairchild
- Model
- 74HC
- Category
- Other Electronics
- Documents
- 31
- Languages
- EN
- Last added
- 2012-08-01
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FAIRCHILD Interfacing to MM74HC High-Speed CMOS Logic handbook
This document describes the methods and requirements for interfacing with MM74HC high-speed CMOS logic. The MM74HC series logic can be interfaced with other logic families, including 74LS TTL, MM74C, CD4000 CMOS, and 10000 ECL logic. Interfacing with TTL logic is very simple.
Read onlineFairchild 74HC specifications
| Operating Speed Comparison | Similar to LS-TTL, half as fast as ALS-TTL |
|---|---|
| Process Technology | 3.5 micron silicon gate-recessed oxide CMOS |
| Supply Current (HC-CMOS) | 0.0025 pW |
| Supply Current (LS-TTL) | 5.0 mW |
| Supply Current (ALS-TTL) | 20mW |
| Supply Current (S-TTL) | 75 mW |
Source: FAIRCHILD Comparison of MM74HC to 74LS 74S 74ALS Logic handbook
All Fairchild 74HC documents by type
How to use the product for one specific task, with worked examples.
- FAIRCHILD Comparison of MM74HC to 74LS 74S 74ALS Logic handbook 8 p
- Fairchild MM74HC High-Speed CMOS AC Characteristics Application Note 8 p
- Fairchild 74HC Logic CMOS SCR Latch-Up Elimination Application Note 10 p
- Fairchild MM54HC/MM74HC Power Dissipation Analysis 6 p
- Fairchild Semiconductor 54HCT/74HCT TTL Compatible CMOS Logic Application Note 6 p
- Fairchild MM74HC High-Speed CMOS Logic Application Note – DC Electrical Characteristics 8 p
Ratings, dimensions and ordering codes, for selection and design work.
- Fairchild MM74HCT00 Quad 2-Input NAND Gate Datasheet 9 p
- Fairchild MM74HC000 Quad 2-Input NAND Gate Datasheet 9 p
- Fairchild MM74HCU04 Hex Inverter Datasheet 10 p
- Fairchild Semiconductor MM74HCT05 Hex Inverter (Open Drain) Datasheet 9 p
- Fairchild MM74HCT04 Hex Inverter Datasheet 10 p
- Fairchild MM74HC574 3-STATE Octal D-Type Edge-Triggered Flip-Flop Data Sheet 8 p
- Fairchild Semiconductor MM74HC4049/MM74HC4050 Datasheet 6 p
- Fairchild MM74HC4046 CMOS Phase Lock Loop Datasheet 18 p
- Fairchild MM74HC4046 CMOS Phase-Lock Loop Datasheet 17 p
- FAIRCHILD MM74HC4020 MM74HC4040 14-Stage Binary Counter 12-Stage Binary Counter handbook 9 p
- Fairchild MM74HC174 Hex D-Type Flip-Flops with Clear Datasheet 7 p
- Fairchild MM74HC74A Dual D-Type Flip-Flop with Preset and Clear Datasheet 8 p
- Fairchild MM74HC175 Quad D-Type Flip-Flop With Clear Datasheet 7 p
- Fairchild Semiconductor MM74HC08 Quad 2-Input AND Gate Datasheet 9 p
- FAIRCHILD MM74HC4051 MM74HC4052 MM74HC4053 8-Channel Analog Multiplexer handbook 11 p
- Fairchild MM74HC4051/MM74HC4052/MM74HC4053 Analog Multiplexer Datasheet 11 p
- FAIRCHILD Interfacing to MM74HC High-Speed CMOS Logic handbook
- FAIRCHILD MM74HCT540/MM74HCT541Inverting/Non-Inverting Octal 3-STATE Buffer handbook
- FAIRCHILD MM74HCT240/MM74HCT244 Octal 3-STATE Buffer handbook
- FAIRCHILD MM74HC540/MM74HC541 Inverting/Non-Inverting Octal 3-STATE Buffers handbook
- FAIRCHILD MM74HC244 Octal 3-STATE Buffer handbook
- FAIRCHILD MM74HC240 Inverting Octal 3-STATE Buffer handbook
- FAIRCHILD MM74HC125/MM74HC126 3-STATE Quad Buffers handbook
- FAIRCHILD MM74HC132 Quad 2-Input NAND Schmitt Trigger handbook
- FAIRCHILD MM74HC04 Hex Inverter handbook
Questions answered in these manuals
How does the speed of MM54HC/MM74HC compare to other logic families?
The MM54HC/MM74HC family provides speeds similar to low power Schottky (54LS/74LS) technology, but is approximately half as fast as 54ALS/74ALS and 545/745 logic.
From: FAIRCHILD Comparison of MM74HC to 74LS 74S 74ALS Logic handbook
What is the main advantage of the MM54HC/MM74HC family?
It provides a combination of speed and power characteristics not duplicated by bipolar logic families or other CMOS families, with speeds similar to LS-TTL.
From: FAIRCHILD Comparison of MM74HC to 74LS 74S 74ALS Logic handbook
What is the standard input signal rise and fall time used for AC specifications?
The specified input signals have a rise and fall time of 6 ns.
From: Fairchild MM74HC High-Speed CMOS AC Characteristics Application Note
How much does propagation delay increase when lowering the power supply from 5V to 2V?
Propagation delays increase by about two to three times as the voltage drops from 5V to 2V.
From: Fairchild MM74HC High-Speed CMOS AC Characteristics Application Note
What is CMOS SCR latch-up?
It is a parasitic phenomenon involving a four-layer thyristor structure (P-N-P-N) that appears from V CC to ground, causing the circuit to malfunction.
From: Fairchild 74HC Logic CMOS SCR Latch-Up Elimination Application Note
How is latch-up triggered in 74HC logic?
It is commonly triggered by applying a voltage greater than V CC or less than ground to any input or output, which forward biases the protection diodes.
From: Fairchild 74HC Logic CMOS SCR Latch-Up Elimination Application Note