4
INDUSTRIAL TEMPERATURE RANGE
IDTQS3126
HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per TTL-driven input (V
IN = 3.4V, control inputs only). A and Y pins do not contribute to ΔIcc.
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 Y inputs generate no significant
AC or DC currents as they transition. This parameter is guaranteed but not production tested.
POWER SUPPLY CHARACTERISTICS
Symbol Parameter Test Conditions
(1)
Max. Unit
ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 3 μA
ΔICC Power Supply Current per Input HIGH
(2)
VCC = Max., VIN = 3.4V, f = 0 1.25 mA
ICCD Dynamic Power Supply Current per MHz
(3)
VCC = Max., A and Y Pins Open, Control Inputs Toggling @ 50% Duty Cycle 0.25 mA/MHz
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5V ± 5%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol Parameter Min.
(1)
Typ. Max. Unit
t
PLH Data Propagation Delay
(2)
⎯⎯0.25
(3)
ns
tPHL A to Y
t
PZL Switch Turn-On Delay 1.5 ⎯ 6.5 ns
tPZH OE to xA/xY
tPLZ Switch Turn-Off Delay
(2)
1.5 ⎯ 5.5 ns
t
PHZ OE to xA/xY
NOTES:
1. Minimums are 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 at 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.
