參數(shù)資料
型號： SN74CB3Q3345PWR
廠商： TEXAS INSTRUMENTS INC
元件分類： 總線收發(fā)器
英文描述： CB3Q/3VH/3C/2B SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝： GREEN, PLASTIC, TSSOP-20
文件頁數(shù)： 14/18頁
文件大?。?/td> 652K
代理商： SN74CB3Q3345PWR
www.ti.com
Switching Characteristics
0
2
4
6
8
10
12
14
16
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
VI - V
TYPICAL ron
vs
VI
VCC = 3.3 V
TA = 25°C
IO = -15 mA
r o
n
-
ON-State
Resistance
-
W
0
2
4
6
8
10
12
0
2
4
6
8
10
12
14
16
18
20
OE or OE Switching Frequency MHz
TYPICAL ICC
vs
OE or OE SWITCHING FREQUENCY
VCC = 3.3 V
TA = 25 °C
A and B Ports Open
One OE or OE Switching
I C
C
mA
SN74CB3Q3345
8-BIT FET BUS SWITCH
2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH
SCDS144B – OCTOBER 2003 – REVISED MARCH 2005
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3)
VCC = 2.5 V
VCC = 3.3 V
FROM
TO
± 0.2 V
± 0.3 V
PARAMETER
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
fOE or fOE(1)
OE or OE
A or B
10
20
MHz
tpd(2)
A or B
B or A
0.12
0.2
ns
ten
OE or OE
A or B
1.5
7.7
1.5
6.5
ns
tdis
OE or OE
A or B
1
6.9
1
6.8
ns
(1)
Maximum switching frequency for control input (VO > VCC, VI = 5 V, RL ≥ 1 M, CL = 0)
(2)
The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load
capacitance, when driven by an ideal voltage source (zero output impedance).
Figure 1. Typical ron vs VI
Figure 2. Typical ICC vs OE or OE Switching Frequency
5
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