74HC4852D中文資料安世數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

1. General description

The 74HC4852; 74HCT4852 are dual single-pole quad-throw analog switches (SP4T) suitable

for use in analog or digital 4:1 multiplexer/demultiplexer applications. Each switch features four

independent inputs/outputs (nY0, nY1, nY2 and nY3) and a common input/output (nZ). A digital

enable input (E) and two digital select inputs (S0 & S1) are common to both switches. When E is

HIGH, the switches are turned off. The device features injection-current effect control. This allows

signals at disabled analog input channels to exceed the supply voltage without affecting the signal

of the enabled analog channel, eliminating the need for external diode/resistor networks typically

used to keep the analog channel signals within the supply-voltage range. Inputs include clamp

diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of

VCC.

2. Features

? Injection-current cross coupling < 1 mV/mA

? Wide supply voltage range from 2.0 V to 6.0 V for 74HC4852

? ESD protection:

? HBM JESD22-A114E exceeds 2000 V

? CDM JESD22-C101C exceeds 1000 V

? Latch-up performance exceeds 100 mA per JESD 78 Class II level A

? Low ON-state resistance:

? 400 Ω (typical) at VCC = 2.0 V

? 215 Ω (typical) at VCC = 3.0 V

? 120 Ω (typical) at VCC = 3.3 V

? 76 Ω (typical) at VCC = 4.5 V

? 59 Ω (typical) at VCC = 6.0 V

3. Applications

? Analog multiplexing and demultiplexing

? Digital multiplexing and demultiplexing

? Signal gating