參數(shù)資料
型號： 933821940602
廠商： NXP SEMICONDUCTORS
元件分類： 編、解碼器及復用、解復用
英文描述： F/FAST SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDIP16
封裝： 0.300 INCH, PLASTIC, SOT-38-4, DIP-16
文件頁數(shù)： 7/11頁
文件大?。?/td> 150K
代理商： 933821940602
Philips Semiconductors
Product specification
74F258A
Quad 2-line to 1-line selector/multiplexer, inverting
(3-State)
1996 Jan 05
5
AC WAVEFORMS
For all waveforms, VM = 1.5V.
VM
In
Yn
tPLH
tPHL
SF00819
Waveform 1. Propagation Delay
Data and Select to Output
VM
S
Yn
tPLH
tPHL
SF00820
Waveform 2. Propagation Delay
Select to Output
VM
tPHZ
tPZH
OE
VOH -0.3V
0V
Yn
SF00821
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
VM
tPLZ
tPZL
OE
VOL +0.3V
Yn
SF00822
Waveform 4. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
TEST CIRCUIT AND WAVEFORM
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0V
tTHL (tf )
INPUT PULSE REQUIREMENTS
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
Input Pulse Definition
VCC
family
74F
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for 3-State Outputs
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
tTHL (tf )
tTLH (tr )
AMP (V)
amplitude
3.0V
1.5V
VM
RL
7.0V
SF00777
TEST
SWITCH
tPLZ
closed
tPZL
closed
All other
open
SWITCH POSITION
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