參數(shù)資料
型號: IDTQS3V245Q
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 通用總線功能
英文描述: QUICKSWITCH PRODUCTS 3.3V HIGH SPEED BUS SWITCH
中文描述: 8-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝: QSOP-20
文件頁數(shù): 4/7頁
文件大?。?/td> 55K
代理商: IDTQS3V245Q
4
INDUSTRIAL TEMPERATURE RANGE
IDTQS3V245
3.3V HIGH SPEED BUS SWITCH
NOTES:
1. For conditions shown as Mn. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per TTL driven input (V
IN
= 3V, control inputs only). A and B pins do not contribute to Icc.
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 but not production tested.
POWER SUPPLY CHARACTERISTICS
T
A
= –40°C to +85°C, V
CC
= 3.3V ±0.3V
Symbol
Parameter
I
CCQ
Quiescent Power Supply Current
I
CC
Power Supply Current
(2)
per Input HIGH
I
CCD
Dynamc Power Supply Current per MHz
(3)
Test Conditions
(1)
Min.
Max.
3
30
0.15
Unit
μA
μA
V
CC
= Max., V
IN
= GND or V
CC
, f = 0
V
CC
= Max., V
IN
= 3V or V
CC
, f = 0 per Control Input
V
CC
= 3.3V, A and B Pins Open, Control Input Toggling
@ 50% Duty Cycle
mA/MHz
SWITCHING CHARACTERISTICS OV ER OPERATING RANGE
(1)
T
A
= -40°C to +85°C
Symbol
Parameter
t
PLH
Data Propagation Delay
(2,3)
t
PHL
Ax to/fromBx
t
PZL
Switch Turn-On Delay
t
PZH
OE
to Ax/Bx
t
PLZ
Switch Turn-Off Delay
(2)
t
PHZ
OE
to Ax/Bx
Min.
Typ
.
Max.
0.25
Unit
ns
0.5
6.5
ns
0.5
4
ns
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. Mnimums guaranteed but not production tested
2. This parameter is guaranteed but not production tested.
3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone
is of the order of 0.25ns for C
L
= 30pF. Since this time constant is much smaller than the rise and 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 determned by the driving circuit on the driving side of the switch and its interaction with the load on
the driven side.
相關PDF資料
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