74HC4051 Просмотр технического описания (PDF) - Philips Electronics

Номер в каталоге

Компоненты Описание

Список матч

74HC4051

8-channel analog multiplexer/demultiplexer

Philips Electronics 

Philips Semiconductors

8-channel analog

multiplexer/demultiplexer

Product specification

74HC/HCT4051

FEATURES

• Wide analog input voltage range: ± 5 V.

• Low “ON” resistance:

80 Ω (typ.) at VCC − VEE = 4.5 V

70 Ω (typ.) at VCC − VEE = 6.0 V

60 Ω (typ.) at VCC − VEE = 9.0 V

• Logic level translation:

to enable 5 V logic to communicate with ± 5 V analog

signals

• Typical “break before make” built in

• Output capability: non-standard

• ICC category: MSI

GENERAL DESCRIPTION

The 74HC/HCT4051 are high-speed Si-gate CMOS

devices and are pin compatible with the “4051” of the

QUICK REFERENCE DATA

VEE = GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns

SYMBOL

PARAMETER

tPZH/ tPZL

tPHZ/ tPLZ

CI

CPD

CS

turn “ON” time

E to Vos

Sn to Vos

turn “OFF” time

E to Vos

Sn to Vos

input capacitance

power dissipation capacitance per switch

max. switch capacitance

independent (Y)

common (Z)

“4000B” series. They are specified in compliance with

JEDEC standard no. 7A.

The 74HC/HCT4051 are 8-channel analog

multiplexers/demultiplexers with three digital select inputs

(S0 to S2), an active LOW enable input (E), eight

independent inputs/outputs (Y0 to Y7) and a common

input/output (Z).

With E LOW, one of the eight switches is selected (low

impedance ON-state) by S0 to S2. With E HIGH, all

switches are in the high impedance OFF-state,

independent of S0 to S2.

VCC and GND are the supply voltage pins for the digital

control inputs (S0 to S2, and E). The VCC to GND ranges

are 2.0 to 10.0 V for HC and 4.5 to 5.5 V for HCT. The

analog inputs/outputs (Y0 to Y7, and Z) can swing between

VCC as a positive limit and VEE as a negative limit.

VCC − VEE may not exceed 10.0 V.

For operation as a digital multiplexer/demultiplexer, VEE is

connected to GND (typically ground).

CONDITIONS

CL = 15 pF; RL = 1 kΩ;

VCC = 5 V

TYPICAL

HC

HCT

22

22

20

24

UNIT

ns

ns

notes 1 and 2

18

16

ns

19

20

ns

3.5

3.5

pF

25

25

pF

5

5

pF

25

25

pF

Notes

1. CPD is used to determine the dynamic power dissipation (PD in µW):

PD = CPD × VCC2 × fi + ∑ { (CL + CS ) × VCC2 × fo } where:

fi = input frequency in MHz

fo = output frequency in MHz

∑ { (CL + CS) × VCC2 × fo } = sum of outputs

CL = output load capacitance in pF

CS = max. switch capacitance in pF

VCC = supply voltage in V

2. For HC the condition is VI = GND to VCC

For HCT the condition is VI = GND to VCC − 1.5 V

December 1990

2

Share Link: