74AC157MTCX

Series:	74AC
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Multiplexer
Circuit:	4 x 2:1
Independent Circuits:	1
Current - Output High, Low:	24mA, 24mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	2 V ~ 6 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	74AC157

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The 74AC157MTCX is a quad 2-line-to-1-line data selector/multiplexer designed for 1.65 V to 5.5 V and from -40°C to +85°C operation temperatures. It is ideal fordecoding addresses, and for data routing applications. This device is pin compatible with the standard CMOS 74HC/HCT157 and 74AC/ACT157 ICs. The 74AC157MTCX is part of a broad family of active signal switches, multiplexers, decoders, and demultiplexers integrated circuits. Many signal switching functions are supported by selection of a few external passive components: resistors, diodes, and capacitors as well as drivers. Generally, signal switches and multiplexers are used to route certain signal lines in a circuit and multiplexers are used to connect two or more signal sources to a single signal line. This device provides quad, 2:1 multiplexers/data selectors. Each multiplexer is controlled by the binary address {A0, A1} applied to the select (S) inputs. The multiplexer will select one of two active low data inputs (D0 or D1) determined by the address lines. The selected data is transferred to an active low data output (Y). It has high speed operation with a typical propagation delay time of 4.1 ns.The device also has a power-down disabling feature that when enabled turn off the multiplexers and prevents them from switching erroneously. It is a representation of a static CMOS circuit that has impact on the lower power needs of the multiplexers, but does not affect the switching time.The 74AC157MTCX provides multiple advantages, especially in the area of decoder and data routing applications, such as:• Wide operating voltage, ranging from 1.65 V to 5.5 V, allows flexibility with batteries, both non-rechargeable and rechargeable.• Improved switching speeds over other multiplexers, at 4.1 ns.• The disabled multiplexers do not draw any current and allow power savings. • This device is pin compatible with the standard CMOS 74HC/HCT157 and 74AC/ACT157 ICs.• The logic level and pin configuration identical with the industry-standard CD4000 Families.In conclusion, the 74AC157MTCX from Fairchild Semiconductor is a reliable and low-power quad 2-line-to-1-line data selector/multiplexer designed to provide a flexible and efficient way for data decoding and routing applications. It provides operating voltage flexibility, improved switching speeds, and uses the industry-standard CD4000 Families to simplify system design and speed time to market.

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