74HCT157PW集成電路（IC）的信號開關(guān)多路復用器解碼器規(guī)格書PDF中文資料

1. General description

The 74HC157; 74HCT157 is a quad 2-input multiplexer. The device features select (S) and enable

E inputs. A HIGH on S selects data source 1, a LOW data source 0. A HIGH on E forces all the

outputs (1Y to 4Y) LOW. Inputs include clamp diodes. This enables the use of current limiting

resistors to interface inputs to voltages in excess of VCC.

2. Features and benefits

? Wide supply voltage range from 2.0 V to 6.0 V

? CMOS low power dissipation

? High noise immunity

? Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

? Complies with JEDEC standards:

? JESD8C (2.7 V to 3.6 V)

? JESD7A (2.0 V to 6.0 V)

? Input levels:

? For 74HC157: CMOS level

? For 74HCT157: TTL level

? Non-inverting data path

? ESD protection:

? ? HBM JESD22-A114F exceeds 2000 V

? MM JESD22-A115-A exceeds 200 V

? Multiple package options

? Specified from -40 °C to +85 °C and from -40 °C to +125 °C