IDTQS3384PG8 [IDT]
Bus Driver, 1-Func, 10-Bit, True Output, CMOS, PDSO24, TSSOP-24;
| 型号： | IDTQS3384PG8 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, 1-Func, 10-Bit, True Output, CMOS, PDSO24, TSSOP-24 光电二极管 |
| 文件： | 总6页 (文件大小：82K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
10-BIT BUS SWITCHES
QS3384
QS32384
FEATURES/BENEFITS
DESCRIPTION
• Enhanced N channel FET with no inherent diode to V
The QS3384 and QS32384 provide a set of ten high-speed CMOS,
TTL-compatible bus switches. The low ON resistance of QS3384
allows inputs to be connected to outputs without adding propagation
delay and without generating additional ground bounce. Two banks of
5 switches are controlled by independent Bus Enable (BE) signals.
The QS32384 adds an internal series resistor with each switch to
reduce reflection noise in high speed applications. When closed, the
switch acts as the source (series) termination for the driver connected
to it.
CC
• 5Ω bidirectional switches connect inputs to outputs
• Zero propagation delay (QS3384), zero ground bounce
• Undershoot clamp diodes on all switch and control pins
• QS32384 is 25Ω version for low noise
• Two enables control five bits each
• Available in TSSOP, SOIC, QSOP AND HQSOP
APPLICATIONS
• Hot-swapping, hot-docking
(Application Note AN-13)
• Voltage translation
(5V to 3.3V; Application Note AN-11)
• Power conservation
• Capacitance reduction and isolation
• Bus isolation
• Clock gating
FUNCTIONAL BLOCK DIAGRAM
A0
B0
A4
A5
B4
B5
A9
B9
BEA
BEB
JULY 1999
1
1999 Integrated Device Technology, Inc
DSC-XXXXXX
QS3384 AND QS32384
IDT
PIN CONFIGURATION
PIN DESCRIPTION
(ALL PINS TOP VIEW)
Name
A0-A9
I/O
I/O
I/O
I
Function
Bus A
TSSOP, SOIC, QSOP, HQSOP
B0-B9
Bus B
BEA
B0
1
24
23
22
21
20
19
18
17
16
15
14
13
VCC
B9
A9
A8
B8
B7
A7
A6
B6
B5
A5
BEB
BEA, BEB
Bus Switch Enable
2
A0
3
A1
4
B1
5
B2
6
A2
7
FUNCTION TABLE
A3
8
B3
9
BEA
H
BEB
H
B0-B4
Hi-Z
B5-B9
Hi-Z
Function
Disconnect
Connect
Connect
Connect
B4
10
11
12
A4
L
H
A0-A4
Hi-Z
Hi-Z
GND
H
L
A5-A9
A5-A9
L
L
A0-A4
ABSOLUTE MAXIMUM RATINGS
Note: ABSOLUTE MAXIMUM CONTINU-
OUS RATINGS are those values beyond
which damage to the device may occur.
Exposure to these conditions or conditions
beyond those indicated may adversely affect
device reliability. Functional operation under
absolute-maximum conditions is not implied.
Supply Voltage to Ground ........................................................................ –0.5V to 7.0V
DC Switch Voltage V .............................................................................. –0.5V to 7.0V
S
DC Input Voltage V ................................................................................ –0.5V to 7.0V
IN
AC Input Voltage (for a pulse width ≤ 20ns) ..........................................................–3.0V
DC Output Current Max. Sink Current/Pin ........................................................... 120mA
Maximum Power Dissipation ............................................................................0.5 watts
TSTG Storage Temperature ...................................................................... –65° to 150°C
CAPACITANCE
TA = 25°C, f = 1MHz, V = 0V, VOUT = 0V
IN
Note:Capacitance is guaranteed but not
SOIC, QSOP
production tested. For total capacitance while
the switch is ON, please see Section 1 under
“Input and Switch Capacitance.”
Pins
Control Inputs
Typ
3
Max
5
Unit
pF
QuickSwitch Channels
(Switch OFF)
5
7
pF
2
1999 Integrated Device Technology, Inc
DSC-XXXXXX
IDT
QS3384 AND QS32384
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Commercial: TA = –40°C to 85°C, V = 5.0V ±5%
Military: TA = –55°C to 125°C, VCC = 5.0V ±10%
CC
Symbol Parameter
Input HIGH Voltage
Test Conditions
Min
Typ(1)
Max
Unit
V
Guaranteed Logic HIGH
for Control Inputs
2.0
—
—
V
IH
V
Input LOW Voltage
Guaranteed Logic LOW
for Control Inputs
—
—
—
0.8
1
V
IL
| I |
Input Leakage Current
(Control Inputs)
0 ≤ V ≤ V
CC
0.01
µA
IN
IN
| IOZ
|
Off-State Current (Hi-Z)
Switch ON Resistance(2)
0 ≤ VOUT ≤ V , Switches OFF
—
0.01
1
µA
CC
RON
V
CC = Min.,
3384 (Com)
3384 (Mil)
—
—
20
—
5
7
Ω
V = 0.0V
10
28
35
15
40
45
IN
ION = 30mA
32384 (Com)
32384 (Mil)
RON
Switch ON Resistance(2)
Pass Voltage(3)
V
CC = Min.,
3384 (Com)
3384 (Mil)
—
—
20
—
10
15
35
40
15
20
48
55
Ω
V = 2.4V
IN
ION = 15mA
32384 (Com)
32384 (Mil)
V
V = VCC = 5V, IOUT = –5µA
3.7
4
4.2
V
P
IN
Notes:
1. Typical values indicate VCC = 5.0V and TA = 25°C.
2. For a diagram explaining the procedure for RON measurement, please see Section 1 under “DC Electrical Characteristics.” Max. value of RON guaranteed, but not
production tested.
3. Pass Voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE VS VIN AT VCC = 5.0V (QS3384)
16
14
12
10
RON
8
(ohms)
6
4
2
0
1.5
2.0
2.5
3.0
3.5
1.0
0.0
0.5
VIN
(Volts)
Note: For QS32384, add 23Ω to RON shown.
3
1999 Integrated Device Technology, Inc
DSC-XXXXXX
QS3384 AND QS32384
IDT
POWER SUPPLY CHARACTERISTICS OVER OPERATING RANGE
Commercial: TA = –40°C to 85°C, V = 5.0V ±5%
Military: TA = –55°C to 125°C, V = 5.0V ±10%
CC
CC
Symbol
Parameter
Test Conditions(1)
CC = Max., V = GND or VCC, f = 0
Max
Unit
ICCQ
Quiescent Power
Supply Current
V
1.5
mA
IN
∆ICC
Power Supply Current
per Input HIGH
V
CC = Max., V = 3.4V, f = 0
2.5
mA
IN
(2)
per Control Input
QCCD
Dynamic Power Supply
Current per MHz(3)
V
CC = Max., A and B Pins Open, Control
0.25
mA/
MHz
Inputs Toggling @ 50% Duty Cycle
Notes:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC specifications.
2. Per TTL driven input (V = 3.4V, control inputs only). A and B pins do not contribute to ∆ICC
.
IN
3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no
significant AC or DC currents as they transition. This parameter is guaranteed by characterization, but not production tested.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Commercial: TA = –40°C to 85°C, V = 5.0V ±5%
Military: TA = –55°C to 125°C, V = 5.0V ±10%
CC
CC
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
QS3384
QS32384
Typ
Symbol
Description(1)
Min
Typ Max Min
Max
Unit
(2,4)
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
Data Propagation Delay
Ai to Bi, Bi to Ai
COM
MIL
—
—
—
—
0.25(3)
0.75(3)
—
—
—
—
1.25(3)
1.75(3)
ns
Switch Turn-on Delay
COM
MIL
1.5
1.5
—
—
6.5
7.5
1.5
1.5
—
—
7.5
8.5
ns
ns
BEA, BEB to Ai, Bi
(2)
Switch Turn-off Delay
COM
MIL
1.5
1.5
—
—
5.5
6.5
1.5
1.5
—
—
5.5
6.5
BEA, BEB to Ai, Bi
Notes:
1. See Test Circuit and Waveforms. Minimums guaranteed but not production tested.
2. This parameter is guaranteed by but not production tested.
3. The time constant for the switch alone is of the order of 0.25ns for QS3384 and 1.25ns for QS3284 for CL = 50pF.
4. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. Since this time constant is much smaller
than the rise/fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay of the bus switch when used in a system is determined by
the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
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High-Speed CMOS 10-Bit Bus Switch
QS3384
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Related Documents
File Name
Document Title
Document Type
Datasheet
Size
Revision Date
QS3384_DS_13011.pdf
QS3384 DATA SHEET
QuickSwitch Basics
62
KB
07/01/1999
12/22/1999
QS32XV245_MI_80358.pdf
Misc
105 KB
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Page updated Tuesday, April 18, 2000 at 02:02 PM
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