器件名称: MC74AC353D
功能描述: DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
文件大小: 179.86KB 共8页
简 介:MC74AC353 MC74ACT353 Dual 4Input Multiplexer with 3State Outputs
The MC74AC353/74ACT353 is a dual 4-input multiplexer with 3-state outputs. It can select two bits of data from four sources using common Select inputs. The outputs may be individually switched to a high impedance state with a HIGH on the respective Output Enable (OE) inputs, allowing the outputs to interface directly with bus-oriented systems. Inverted Version of the MC74AC253/74ACT253 Multifunction Capability Separate Enables for Each Multiplexer Outputs Source/Sink 24 mA ′ACT353 Has TTL Compatible Inputs
VCC 16 OEb 15 S0 14 I3b 13 I2b 12 I1b 11 I0b 10 Zb 9 PIN NAMES I0a–I3a I0b–I3b S0, S1 OEa OEb Za, Zb Side A Data Inputs Side B Data Inputs Common Select Inputs Side A Enable Input Side B Enable Input Multiplexer Outputs
DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
N SUFFIX CASE 648-08 PLASTIC
D SUFFIX CASE 751B-05 PLASTIC
1 OEa
2 S1
3 I3a
4 I2a
5 I1a
6 I0a
7 Za
8 GND
TRUTH TABLE
Select Inputs S0 X L L H H L L H H S1 X L L L L H H H H I0 X L H X X X X X X Data Inputs I1 X X X L H X X X X I2 X X X X X L H X X I3 X X X X X X X L H Output Enable OE H L L L L L L L L Outputs Z Z H L H L H L H L OEa I0a I1a I2a I3a I0b I1b I2b I3b OEb
LOGIC SYMBOL
S0 S1
Za
Zb
Address inputs S0 and S1 are common to both sections. H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
FACT DATA 5-1
MC74AC353 MC74ACT353
FUNCTIONAL DESCRIPTION
The MC74AC353/74ACT353 contains two identica……
