參數(shù)資料
型號(hào): SN74HC244NSG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: HC/UH SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝: GREEN, PLASTIC, SOP-20
文件頁(yè)數(shù): 16/22頁(yè)
文件大小: 815K
代理商: SN74HC244NSG4
SN54HC244, SN74HC244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54HC244
SN74HC244
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
2
5
6
2
5
6
V
High-level input voltage
VCC = 2 V
1.5
V
VIH
High-level input voltage
VCC = 4.5 V
3.15
V
IH
VCC = 6 V
4.2
V
Low-level input voltage
VCC = 2 V
0.5
V
VIL
Low-level input voltage
VCC = 4.5 V
1.35
V
IL
VCC = 6 V
1.8
VI
Input voltage
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
V
t/ v
Input transition rise/fall time
VCC = 2 V
1000
ns
t/v
Input transition rise/fall time
VCC = 4.5 V
500
ns
VCC = 6 V
400
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54HC244
SN74HC244
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
V
V = V
or V
I
= –20 A
2 V
1.9
1.998
1.9
V
V = V
or V
IOH = –20 A
4.5 V
4.4
4.499
4.4
V
VOH
VI = VIH or VIL
OH
6 V
5.9
5.999
5.9
V
OH
IIH
IL
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
V
V = V
or V
I
= 20 A
2 V
0.002
0.1
V
V = V
or V
IOL = 20 A
4.5 V
0.001
0.1
V
VOL
VI = VIH or VIL
OL
6 V
0.001
0.1
V
OL
IIH
IL
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
VI = VCC or 0
6 V
±0.1
±100
±1000
nA
IOZ
VO = VCC or 0,
VI = VIH or VIL
6 V
±0.01
±0.5
±10
±5
A
ICC
VI = VCC or 0,
IO = 0
6 V
8
160
80
A
Ci
2 V to 6 V
3
10
pF
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