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CD54HC670 Datasheet(PDF) 5 Page - Texas Instruments

Part No. CD54HC670
Description  High-Speed CMOS Logic 4x4 Register File
Download  17 Pages
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD54HC670 Datasheet(HTML) 5 Page - Texas Instruments

 
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5
Prerequisite for Switching Specifications
PARAMETER
SYMBOL
VCC (V)
25oC
-40oC TO 85oC
-55oC TO 125oC
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
HC TYPES
Setup Time
Data to WE
Write to WE
tSU, th
260
-
-
75
-
-
90
-
-
ns
4.5
12
-
-
15
-
-
18
-
-
ns
610
-
-
13
-
-
15
-
-
ns
Hold Time
Data to WE
Write to WE
tH, tW
25
-
-
5
-
-
5
-
-
ns
4.5
5
-
-
5
-
-
5
-
-
ns
65
-
-
5
-
-
5
-
-
ns
Pulse Width WE
tW
2
80
-
-
100
-
-
120
-
-
ns
4.5
16
-
-
20
-
-
24
-
-
ns
614
-
-
17
-
-
20
-
-
ns
Latch Time WE to RA0,
RA1
tLATCH
2
100
-
-
125
-
-
150
-
-
ns
4.5
20
-
-
25
-
-
30
-
-
ns
617
-
-
21
-
-
26
-
-
ns
HCT TYPES
Setup Time
Data to WE
tSU, th
4.5
12
-
-
15
-
-
18
-
-
ns
Hold Time
Data to WE
Write to WE
tH, tW
4.5
5
-
-
5
-
-
5
-
-
ns
Setup Time
Write to WE
tSU
4.5
18
-
-
23
-
-
27
-
-
ns
Pulse Width WE
tW
4.5
20
-
-
25
-
-
30
-
-
ns
Latch Time WE to RA0,
RA1
tLATCH
4.5
25
-
-
31
-
-
38
-
-
ns
Switching Specifications CL = 50pF, Input tr, tf = 6ns
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC (V)
25oC
-40oC TO
85oC
-55oC TO
125oC
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
Propagation Delay
tPLH, tPHL
CL = 50pF
Reading Any Word
2
-
-
195
-
245
-
295
ns
4.5
-
-
39
-
49
-
59
ns
CL = 15pF
5
-
16
-
-
-
-
-
ns
CL = 50pF
6
-
-
33
-
42
-
50
ns
Write Enable to Output
tPLH,tPHL
CL = 50pF
2
-
-
250
-
315
-
375
ns
4.5
-
-
50
-
63
-
75
ns
CL = 15pF
5
-
21
-
-
-
-
-
ns
CL = 50pF
6
-
-
43
-
54
-
64
ns
CD54HC670, CD74HC670, CD74HCT670
CD54HC670, CD74HC670, CD74HCT670


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