参数资料
型号: SN74LVCH8T245DGVRG
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO24
封装: PLASTIC, TVSOP-24
文件页数: 19/22页
文件大小: 755K
代理商: SN74LVCH8T245DGVRG
www.ti.com
Switching Characteristics
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES637A – AUGUST 2005 – REVISED FEBRUARY 2007
Electrical Characteristics (continued)
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCCA
VCCB
MIN
TYP
MAX
MIN
MAX
UNIT
DIR at VCCA – 0.6 V,
I
CCA
DIR
B port = open,
3 V to 5.5 V
50
A
A port at VCCA or GND
Control
Ci
VI = VCCA or GND
3.3 V
4
5
pF
inputs
A or B
8.5
10
Cio
VO = VCCA/B or GND
3.3 V
pF
port
over recommended operating free-air temperature range, V
CCA = 1.8 V ± 0.15 V (unless otherwise noted) (see Figure 1)
VCCB = 1.8 V
VCCB = 2.5 V
VCCB = 3.3 V
VCCB = 5 V
FROM
TO
± 0.15 V
± 0.2 V
± 0.3 V
± 0.5 V
PARAMETER
UNIT
(INPUT)
(OUTPUT)
MIN MAX
MIN
MAX
MIN MAX
tPLH
A
B
1.7
21.9
1.3
9.2
1
7.4
0.4
7.1
ns
tPHL
tPLH
B
A
0.9
23.8
0.8
23.6
0.7
23.4
0.7
23.4
ns
tPHL
tPHZ
OE
A
1.5
29.6
1.5
29.4
1.5
29.3
1.4
29.2
ns
tPLZ
tPHZ
OE
B
2.4
32.2
1.9
13.1
1.7
12
1.3
10.3
ns
tPLZ
tPZH
OE
A
0.4
24
0.4
23.8
0.4
23.7
0.4
23.7
ns
tPZL
tPZH
OE
B
1.8
32
1.5
16
1.2
12.6
0.9
10.8
ns
tPZL
over recommended operating free-air temperature range, V
CCA = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1)
VCCB = 1.8 V
VCCB = 2.5 V
VCCB = 3.3 V
VCCB = 5 V
FROM
TO
± 0.15 V
± 0.2 V
± 0.3 V
± 0.5 V
PARAMETER
UNIT
(INPUT)
(OUTPUT)
MIN MAX
MIN
MAX
MIN
MAX
MIN MAX
tPLH
A
B
1.5
21.4
1.2
9
0.8
6.2
0.6
4.8
ns
tPHL
tPLH
B
A
1.2
9.3
1
9.1
1
8.9
0.9
8.8
ns
tPHL
tPHZ
OE
A
1.4
9
1.4
9
1.4
9
1.4
9
ns
tPLZ
tPHZ
OE
B
2.3
29.6
1.8
11
1.7
9.3
0.9
6.9
ns
tPLZ
tPZH
OE
A
1
10.9
1
10.9
1
10.9
1
10.9
ns
tPZL
tPZH
OE
B
1.7
28.2
1.5
12.9
1.2
9.4
1
6.9
ns
tPZL
6
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