参数资料
型号: SN74LV245ATPWR
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: LV/LV-A/LVX/H SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封装: GREEN, PLASTIC, TSSOP-20
文件页数: 16/21页
文件大小: 751K
代理商: SN74LV245ATPWR
www.ti.com
Electrical Characteristics
Switching Characteristics
SN74LV245AT
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCLS605B – DECEMBER 2004 – REVISED AUGUST 2005
over recommended operating free-air temperature range (unless otherwise noted)
TA = –40°C
TA = 25°C
to 85
°C
PARAMETER
TEST CONDITIONS
VCC
UNIT
MIN
TYP
MAX
MIN
MAX
IOH = –50 A
4.5 V
4.4
4.5
4.4
VOH
V
IOH = –16 mA
4.5 V
3.8
IOL = 50 A
4.5 V
0
0.1
VOL
V
IOL = 16 mA
4.5 V
0.55
II
VI = 5.5 V or GND
0 to 5.5 V
±0.1
±1
A
IOZ
VO = VCC or GND
5.5 V
±0.25
±2.5
A
ICC
VI = VCC or GND, IO = 0
5.5 V
2
20
A
I
CC
(1)
One input at 3.4 V, Other inputs at VCC or GND
5.5 V
1.35
1.5
mA
Ioff
VI or VO = 0 to 5.5 V
0
0.5
5
A
Ci
Control inputs
VI = VCC or GND
5 V
3
pF
Cio
A or B port
VO = VCC or GND
5 V
7
pF
(1)
This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
over recommended operating free-air temperature range, V
CC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
TA = 25°C
FROM
TO
LOAD
PARAMETER
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
tPLH
3.1
4.9
7.7
1
8.5
A or B
B or A
CL = 15 pF
ns
tPHL
2.3
4.9
7.7
1
8.5
tPZH
3.5
9.4
13.8
1
15
OE
A or B
CL = 15 pF
ns
tPZL
3.7
9.4
13.8
1
15
tPHz
3.5
3.9
7.5
1
8
OE
A or B
CL = 15 pF
ns
tPLZ
2.6
3.9
7.5
1
8
tPLH
4.6
5.4
8.7
1
9.5
A or B
B or A
CL = 50 pF
ns
tPHL
4.7
5.4
8.7
1
9.5
tPZH
4.9
9.9
14.8
1
16
OE
A or B
CL = 50 pF
ns
tPZL
5.3
9.9
14.8
1
16
tPHZ
4.5
10.1
15.4
1
16.5
OE
A or B
CL = 50 pF
ns
tPLZ
4.1
10.1
15.4
1
16.5
tsk(o)
CL = 50 pF
1
ns
4
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