參數(shù)資料
型號(hào)： SN74CB3Q3244GQNR
廠商： TEXAS INSTRUMENTS INC
元件分類： 總線收發(fā)器
英文描述： CB3Q/3VH/3C/2B SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PBGA20
封裝： PLASTIC, VFBGA-20
文件頁(yè)數(shù)： 19/23頁(yè)
文件大?。?/td> 880K
代理商： SN74CB3Q3244GQNR
SN74CB3Q3244
8BIT FET BUS SWITCH
2.5V/3.3V LOW VOLTAGE HIGHBANDWIDTH BUS SWITCH
SCDS154B OCTOBER 2003 REVISED DECEMBER 2004
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
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
IOZ
VCC = 3.6 V,
VO = 0 to 5.5 V,
VI = 0,
Switch OFF,
VIN = VCC or GND
±1
A
Ioff
VCC = 0,
VO = 0 to 5.5 V,
VI = 0
1
A
ICC
VCC = 3.6 V,
II/O = 0,
Switch ON or OFF,
VIN = VCC or GND
0.7
2
mA
ICC§ Control inputs VCC = 3.6 V,
One input at 3 V,
Other inputs at VCC or GND
30
A
ICCD
Per control
input
VCC = 3.6 V,
A and B ports open,
0.14
0.15
mA/
MHz
ICCD
Per control
input
Control input switching at 50% duty cycle
0.14
0.15
mA/
MHz
Cin
Control inputs
VCC = 3.3 V,
VIN = 5.5 V, 3.3 V, or 0
2.5
3.5
pF
Cio(OFF)
VCC = 3.3 V,
Switch OFF,
VIN = VCC or GND,
VI/O = 5.5 V, 3.3 V, or 0
3.5
5
pF
Cio(ON)
VCC = 3.3 V,
Switch ON,
VIN = VCC or GND,
VI/O = 5.5 V, 3.3 V, or 0
9
11
pF
VCC = 2.3 V,
VI = 0,
IO = 30 mA
4
8
ron#
VCC = 2.3 V,
TYP at VCC = 2.5 V
VI = 1.7 V,
IO = 15 mA
5
9
ron#
VCC = 3 V
VI = 0,
IO = 30 mA
4
6
VCC = 3 V
VI = 2.4 V,
IO = 15 mA
5
8
VIN and IIN refer to control inputs. VI, VO, II, and IO refer to data pins.
All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C.
For I/O ports, the parameter IOZ includes the input leakage current.
§ This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND.
This parameter specifies the dynamic power-supply current associated with the operating frequency of a single control input (see Figure 2).
# 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.
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 2.5 V
± 0.2 V
VCC = 3.3 V
± 0.3 V
UNIT
PARAMETER
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
UNIT
fOE||
OE
A or B
10
20
MHz
tpdk
A or B
B or A
0.12
0.2
ns
ten
OE
A or B
2.8
7.1
2.5
5.9
ns
tdis
OE
A or B
1
5.8
1.5
5.8
ns
|| Maximum switching frequency for control input (VO > VCC, VI = 5 V, RL ≥ 1 M, CL = 0)
k 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).
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