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SNJ54HC245FK Datasheet(PDF) 5 Page - Texas Instruments

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Part # SNJ54HC245FK
Description  Octal Bus Transceivers With 3-State Outputs
Download  29 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SNJ54HC245FK Datasheet(HTML) 5 Page - Texas Instruments

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SN54HC245, SN74HC245
www.ti.com
SCLS131E – DECEMBER 1982 – REVISED SEPTEMBER 2015
6.4 Thermal Information
SNx4HC245
DB
DW
N
NS
PW
THERMAL METRIC(1)
UNIT
(SSOP)
(SOIC)
(PDIP)
(SOP)
(TSSOP)
20 PINS
RθJA
Junction-to-ambient thermal resistance
92.1
77.0
57.0
74.1
99.7
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
53.9
41.5
48.6
40.6
34.0
°C/W
RθJB
Junction-to-board thermal resistance
47.2
44.8
38.0
41.6
50.7
°C/W
ψJT
Junction-to-top characterization parameter
16.5
16.8
25.4
14.8
1.8
°C/W
ψJB
Junction-to-board characterization parameter
46.8
44.3
37.8
41.2
50.1
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.5 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
TA = 25°C
SN54HC245
SN74HC245
PARAMETER
TEST CONDITIONS
VCC
UNIT
MIN
TYP
MAX
MIN
MAX
MIN
MAX
2 V
1.9
1.998
1.9
1.9
IOH = –20 µA
4.5 V
4.4
4.499
4.4
4.4
VOH
VI = VIH or VIL
6 V
5.9
5.999
5.9
5.9
V
IOH = –6 mA
4.5 V
3.98
4.3
3.7
3.84
IOH = –7.8 mA
6 V
5.48
5.8
5.2
5.34
2 V
0.002
0.1
0.1
0.1
IOL = 20 µA
4.5 V
0.001
0.1
0.1
0.1
VOL
VI = VIH or VIL
6 V
0.001
0.1
0.1
0.1
V
IOL = 6 mA
4.5 V
0.17
0.26
0.4
0.33
IOL = 7.8 mA
6 V
0.15
0.26
0.4
0.33
II
DIR or OE
VI = VCC or 0
6 V
±0.1
±100
±1000
±1000
nA
IOZ
A or B
VO = VCC or 0
6 V
±0.01
±0.5
±10
±5
µA
ICC
VI = VCC or 0,
IO = 0
6 V
8
160
80
µA
Ci
DIR or OE
2 V to 6 V
3
10
10
10
pF
6.6 Switching Characteristics, CL = 50 pF
over recommended operating free-air temperature range (unless otherwise noted)
(see Figure 3)
TA = 25°C
SN54HC245
SN74HC245
FROM
TO
PARAMETER
VCC
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
2 V
40
105
160
130
tpd
A or B
B or A
4.5 V
15
21
32
26
ns
6 V
12
18
27
22
2 V
125
230
340
290
ten
OE
A or B
4.5 V
23
46
68
58
ns
6 V
20
39
58
49
2 V
74
200
300
250
tdis
OE
A or B
4.5 V
25
40
60
50
ns
6 V
21
34
51
43
2 V
20
60
90
75
tt
A or B
4.5 V
8
12
18
15
ns
6 V
6
10
15
13
Copyright © 1982–2015, Texas Instruments Incorporated
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