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CD54HC646F3A Fiches technique(PDF) 9 Page - Texas Instruments

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No de pièce CD54HC646F3A
Description  OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

CD54HC646F3A Fiches technique(HTML) 9 Page - Texas Instruments

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CD54HC646, CD74HCT646
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCHS278B – APRIL 2003 – REVISED APRIL 2003
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics for CD74HCT646 over recommended operating free-air temperature
range (unless otherwise noted) (see Figure 3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
VCC
TA = 25°C
TA = –55°C
TO 125
°C
TA = –40°C
TO 85
°C
UNIT
(INPUT)
(OUTPUT)
CAPACITANCE
CC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
f
CL = 50 pF
4.5 V
25
17
20
MHz
fmax
CL = 15 pF
5 V
45
MHz
CLKBA or
AorB
CL = 50 pF
4.5 V
44
66
55
CLKAB
A or B
CL = 15 pF
5 V
18
t d
AorB
BorA
CL = 50 pF
4.5 V
37
56
46
ns
tpd
A or B
B or A
CL = 15 pF
5 V
15
ns
SBA or
AorB
CL = 50 pF
4.5 V
46
69
58
SAB†
A or B
CL = 15 pF
5 V
19
t
OE
AorB
CL = 50 pF
4.5 V
45
68
56
ns
ten
OE
A or B
CL = 15 pF
5 V
19
ns
tdi
OE
AorB
CL = 50 pF
4.5 V
35
53
44
ns
tdis
OE
A or B
CL = 15 pF
5 V
14
ns
tt
CL = 50 pF
4.5 V
12
18
15
ns
† These parameters are measured with the internal output state of the storage register opposite that of the bus input.
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TYP
UNIT
Cpd
Power dissipation capacitance
52
pF


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