IDTQS34X245 Datasheet, PDF (4/5 Pages) Integrated Device Technology – QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES

IDTQS34X245
HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol Parameter
Test Conditions⁽¹⁾
Max.
Unit
ICCQ
Quiescent Power Supply Current
VCC = Max., VIN = GND or Vcc, f = 0
∆ICC
Power Supply Current per Control Input HIGH ⁽²⁾ VCC = Max., VIN = 3.4V, f = 0
ICCD
Dynamic Power Supply Current per MHz⁽³⁾
VCC = Max., A and B pins open
12
µA
1.5
mA
0.25
mA/MHz
Control Inputs Toggling at 50% Duty Cycle
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per TLL driven input (VIN = 3.4V, 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.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5.0V ± 5%;
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol
Parameter
tPLH
Data Propagation Delay ^(1,2)
Min. ⁽¹⁾
—
Typ.
Max.
Unit
—
0.25
ns
tPHL
An to/from Bn
tPZL Switch Turn-on Delay
0.5
—
5.6
ns
tPZH OE to An/Bn
tPLZ
Switch Turn-off Delay ⁽¹⁾
0.5
—
5.2
ns
tPHZ OE to An/Bn
NOTES:
1. Minimums are guaranteed but not production tested.
2. 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 CL = 50pF. 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 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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