MC74AC4040 Series

12-Stage Binary Ripple Counter

Catalog

12-Stage Binary Ripple Counter

Part	Logic Type	Number of Bits per Element	Count Rate	Number of Elements	Package / Case	Package / Case	Package / Case	Reset	Mounting Type	Direction	Trigger Type	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [x]	Package / Case [y]
ON Semiconductor MC74AC4040NG	Binary Counter	12	140 MHz	1	0.3 in	16-DIP	7.62 mm	Asynchronous	Through Hole	Up	Negative Edge	16-PDIP	2 V	6 V	85 °C	-40 °C
ON Semiconductor MC74AC4040MELG	Binary Counter	12	140 MHz	1	0.209 "	16-SOIC	5.3 mm	Asynchronous	Surface Mount	Up	Negative Edge	16-SOEIAJ	2 V	6 V	85 °C	-40 °C
ON Semiconductor MC74AC4040DR2G	Binary Counter	12	140 MHz	1		16-SOIC		Asynchronous	Surface Mount	Up	Negative Edge	16-SOIC	2 V	6 V	85 °C	-40 °C	0.154 in	3.9 mm
ON Semiconductor MC74AC4040N	Binary Counter	12	140 MHz	1	0.3 in	16-DIP	7.62 mm	Asynchronous	Through Hole	Up	Negative Edge	16-PDIP	2 V	6 V	85 °C	-40 °C

Catalog

12-Stage Binary Ripple Counter

Key Features

• 140 MHz Typ. Clock

• Outputs Source/Sink 24 mA

• Operating Voltage Range: 2.0 to 6.0 V

• High Noise Immunity

• These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

Description

The MC74AC4040 consists of 12 master-slave flip-flops. The output of each flip-flop feeds the next and the frequency at each output is half that of the preceding one. The state of the counter advances on the negative-going edge of the Clock input. Reset is asynchronous and active-high.State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and may have to be gated with the Clock of the MC74AC4040 for some designs.