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74ALS273DB 数据表(PDF) 5 Page - NXP Semiconductors

部件名 74ALS273DB
功能描述  Octal D-type flip-flop
Download  9 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

74ALS273DB 数据表(HTML) 5 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74ALS273
Octal D-type flip-flop
1991 Feb 08
5
AC WAVEFORMS
For all waveforms, VM = 1.3V.
CP
VM
VM
VM
tw(H)
1/fmax
VM
VM
tPLH
tw(L)
tPHL
Qn
SF00294
Waveform 1.
Propagation Delay for Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
VM
SC00065
MR
Qn
VM
tw(L)
tPHL
VM
tREC
CP
VM
Waveform 2.
Master Reset Pulse Width, Master Reset to
Output Delay, and Master Reset to Clock Recovery Time
th(H)
tsu(H)
CP
SC00064
VM
VM
VM
VM
VM
VM
th(L)
tsu(L)
Dn
Waveform 3.
Data Setup and Hold Times
TEST CIRCUIT AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0.3V
0.3V
tTHL (tff)
INPUT PULSE REQUIREMENTS
Rep.Rate
tw
tTLH
tTHL
1MHz
500ns
2.0ns
2.0ns
Input Pulse Definition
VCC
Family
74ALS
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for Totem-pole 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 )
tTLH (tr )
AMP (V)
Amplitude
3.5V
1.3V
VM
SC00005


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