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74F670 Fiches technique(PDF) 6 Page - NXP Semiconductors

No de pièce 74F670
Description  4 x 4 register file 3-State
Download  12 Pages
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74F670 Fiches technique(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74F670
4 x 4 register file (3-State)
1990 Jul 12
6
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, IOS tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
LIMITS
TEST
Tamb= +25°C
V
=+5 0V
Tamb = 0°C to +70°C
V
=+5 0V
± 10%
SYMBOL
PARAMETER
TEST
CONDITION
VCC = +5.0V
CL = 50pF,
VCC = +5.0V ± 10%
CL = 50pF,
UNIT
CONDITION
CL = 50pF,
RL = 500Ω
CL = 50pF,
RL = 500Ω
MIN
TYP
MAX
MIN
MAX
tPLH
tPHL
Propagation delay
RA, RB to Qn
Waveform 3, 4
3.5
4.0
5.5
5.5
9.0
8.5
3.0
3.5
10.0
9.9
ns
ns
tPLH
tPHL
Propagation delay
WE to Qn
Waveform 1, 2
5.0
6.5
7.0
8.5
10.0
11.5
4.5
6.0
11.0
12.5
ns
ns
tPLH
tPHL
Propagation delay
Dn to Qn
Waveform 1, 2
3.5
6.0
6.0
8.0
8.5
11.0
3.0
5.5
9.5
12.5
ns
ns
tPZH
tPZL
RE Enable time
Qn to High or Low level
Waveform 5
Waveform 6
3.0
4.5
7.0
6.5
12.0
9.0
2.5
4.0
13.0
10.0
ns
ns
tPHZ
tPLZ
RE Disable time
Qn to High or Low level
Waveform 5
Waveform 6
2.0
3.0
3.0
5.0
6.5
8.5
1.5
3.0
7.5
8.5
ns
ns
AC SETUP REQUIREMENTS
LIMITS
Tamb = +25°C
Tamb = 0°C to +70°C
SYMBOL
PARAMETER
TEST CONDITION
VCC = +5.0V
VCC = +5.0V ± 10%
UNIT
CL = 50pF, RL = 500Ω
CL = 50pF, RL = 500Ω
MIN
TYP
MAX
MIN
MAX
ts(H)
ts(L)
Setup time, High or Low
Dn to positive going WE
Waveform 3, 4
1.5
6.0
1.5
7.0
ns
ns
th(H)
th(L)
Hold time, High or Low
Dn to positive going WE
Waveform 3, 4
0
1.0
0
1.0
ns
ns
ts(H)
ts(L)
Setup time, High or Low
WA, WB to negative going WE1
Waveform 3, 4
0
0
0
0
ns
ns
th(H)
th(L)
Hold time, High or Low
WA, WB to negative going WE1
Waveform 3, 4
0
0
0
0
ns
ns
tw(L)
WE Pulse width, Low
Waveform 3, 4
6.5
8.5
ns
NOTES:
1. Write Address (WA, WB) setup time will protect the data written into the previous address. If protection of data in the previous address is not
required, setup time for Write Address to WE can be ignored. Any address selection sustained for the final 7ns of the WE pulse during hold
time for Write Address to WE will result in data being written into that location.


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