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器件3D模型￥ 0.948
SN74HC245DW 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
逻辑控制器
封装:
SOIC-20
描述:
TEXAS INSTRUMENTS SN74HC245DW 收发器, 非反相, 3态, 2V至6V, SOIC-20
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封装信息在P11P12P13P14P15P16P17
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电气规格在P5
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SN74HC245DW数据手册
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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
R
θJA
Junction-to-ambient thermal resistance 92.1 77.0 57.0 74.1 99.7 °C/W
R
θJC(top)
Junction-to-case (top) thermal resistance 53.9 41.5 48.6 40.6 34.0 °C/W
R
θJB
Junction-to-board thermal resistance 47.2 44.8 38.0 41.6 50.7 °C/W
ψ
JT
Junction-to-top characterization parameter 16.5 16.8 25.4 14.8 1.8 °C/W
ψ
JB
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)
T
A
= 25°C SN54HC245 SN74HC245
PARAMETER TEST CONDITIONS V
CC
UNIT
MIN TYP MAX MIN MAX MIN MAX
2 V 1.9 1.998 1.9 1.9
I
OH
= –20 µA 4.5 V 4.4 4.499 4.4 4.4
V
OH
V
I
= V
IH
or V
IL
6 V 5.9 5.999 5.9 5.9 V
I
OH
= –6 mA 4.5 V 3.98 4.3 3.7 3.84
I
OH
= –7.8 mA 6 V 5.48 5.8 5.2 5.34
2 V 0.002 0.1 0.1 0.1
I
OL
= 20 µA 4.5 V 0.001 0.1 0.1 0.1
V
OL
V
I
= V
IH
or V
IL
6 V 0.001 0.1 0.1 0.1 V
I
OL
= 6 mA 4.5 V 0.17 0.26 0.4 0.33
I
OL
= 7.8 mA 6 V 0.15 0.26 0.4 0.33
I
I
DIR or OE V
I
= V
CC
or 0 6 V ±0.1 ±100 ±1000 ±1000 nA
I
OZ
A or B V
O
= V
CC
or 0 6 V ±0.01 ±0.5 ±10 ±5 µA
I
CC
V
I
= V
CC
or 0, I
O
= 0 6 V 8 160 80 µA
C
i
DIR or OE 2 V to 6 V 3 10 10 10 pF
6.6 Switching Characteristics, C
L
= 50 pF
over recommended operating free-air temperature range (unless otherwise noted)
(see Figure 3)
T
A
= 25°C SN54HC245 SN74HC245
FROM TO
PARAMETER V
CC
UNIT
(INPUT) (OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
2 V 40 105 160 130
t
pd
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
t
en
OE A or B 4.5 V 23 46 68 58 ns
6 V 20 39 58 49
2 V 74 200 300 250
t
dis
OE A or B 4.5 V 25 40 60 50 ns
6 V 21 34 51 43
2 V 20 60 90 75
t
t
A or B 4.5 V 8 12 18 15 ns
6 V 6 10 15 13
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