5
INDUSTRIAL TEMPERATURE RANGE
IDTQS3VH257
2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C
VCC = 2.5 ± 0.2V
(1)
VCC = 3.3 ± 0.3V
(1)
Symbol Parameter Min.
(4)
Max. Min.
(4)
Max. Unit
t
PLH Data Propagation Delay
(2,3)
⎯ 0.2 ⎯ 0.2 ns
tPHL Yx to Ixx or Ixx to Yx
t
SEL Select Time 1.5 9 1.5 8 ns
S to Yx
t
PZH Enable Time 1.5 9 1.5 9 ns
tPZL S to Ixx
t
PHZ Disable Time 1.5 8 1.5 8 ns
tPLZ S to Ixx
t
PZH Enable Time 1.5 9 1.5 8 ns
tPZL E to Yx or Ixx
t
PHZ Disable Time 1.5 8 1.5 8 ns
tPLZ E to Yx or Ixx
f
EorS Operating Frequency - Enable
(2,5)
⎯ 10 ⎯ 20 MHz
NOTES:
1. See Test Conditions under TEST CIRCUITS AND WAVEFORMS.
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 0.2ns 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.
4. Minimums are guaranteed but not production tested.
5. Maximum toggle frequency for S or E control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
