參數(shù)資料
型號(hào)： SN74CB3Q3251DGVR
廠商： TEXAS INSTRUMENTS INC
元件分類： 編、解碼器及復(fù)用、解復(fù)用
英文描述： CB3Q/3VH/3C/2B SERIES, 1 LINE TO 8 LINE MULTIPLEXER AND DEMUX/DECODER, TRUE OUTPUT, PDSO16
封裝： GREEN, PLASTIC, TVSOP-16
文件頁數(shù)： 15/19頁
文件大?。?/td> 693K
代理商： SN74CB3Q3251DGVR
www.ti.com
Electrical Characteristics
(1)
Switching Characteristics
SN74CB3Q3251
1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER
2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH
SCDS173A – AUGUST 2004 – REVISED MARCH 2005
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP(2)
MAX
UNIT
VIK
VCC = 3.6 V,
II = –18 mA
–1.8
V
IIN
Control inputs
VCC = 3.6 V,
VIN = 0 to 5.5 V
±1
A
VO = 0 to 5.5 V,
Switch OFF,
IOZ(3)
VCC = 3.6 V,
±1
A
VI = 0,
VIN = VCC or GND
Ioff
VCC = 0,
VO = 0 to 5.5 V,
VI = 0
1
A
II/O = 0,
ICC
VCC = 3.6 V,
VIN = VCC or GND
1
4
mA
Switch ON or OFF,
I
CC
(4)
Control inputs
VCC = 3.6 V,
One input at 3 V,
Other inputs at VCC or GND
30
A
Per control
Control input switching at
mA/
ICCD(5)
VCC = 3.6 V,
A and B ports open,
0.03
0.1
input
50% duty cycle
MHz
Cin
Control inputs
VCC = 3.3 V,
VIN = 5.5 V, 3.3 V, or 0
2.5
4.5
pF
Switch OFF,
A port
VCC = 3.3 V,
VI/O = 5.5 V, 3.3 V, or 0
19.5
25
VIN = VCC or GND,
Cio(OFF)
pF
Switch OFF,
B port
VCC = 3.3 V,
VI/O = 5.5 V, 3.3 V, or 0
3.5
4.5
VIN = VCC or GND,
Switch ON,
Cio(ON)
VCC = 3.3 V,
VI/O = 5.5 V, 3.3 V, or 0
15
19
pF
VIN = VCC or GND,
VI = 0,
IO = 30 mA
4
10
VCC = 2.3 V,
TYP at VCC = 2.5 V
VI = 1.7 V,
IO = –15 mA
4.5
11
ron(6)
VI = 0,
IO = 30 mA
3.5
8
VCC = 3 V
VI = 2.4 V,
IO = –15 mA
4
10
(1)
VIN and IIN refer to control inputs. VI, VO, II, and IO refer to data pins.
(2)
All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C.
(3)
For I/O ports, the parameter IOZ includes the input leakage current.
(4)
This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND.
(5)
This parameter specifies the dynamic power-supply current associated with the operating frequency of a single control input (see
(6)
Measured by the voltage drop between the A and B terminals at the indicated current through the switch. ON-state resistance is
determined by the lower of the voltages of the two (A or B) terminals.
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 fS(1)
OE or S
A or B
10
20
MHz
tpd(2)
A or B
B or A
0.12
0.18
ns
tpd(s)
S
A
1.5
6.7
1.5
5.9
ns
S
B
1.5
6.7
1.5
5.9
ten
ns
OE
A or B
1.5
6.7
1.5
5.9
S
B
0.5
6.1
0.5
6.1
tdis
ns
OE
A or B
0.5
6.1
0.5
6.1
(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).
5
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