Datasheet

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Switching Characteristics
0
2
4
6
8
10
12
14
16
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V
I
- V
TYPICAL r
on
vs
V
I
V
CC
= 3.3 V
T
A
= 25°C
I
O
= -15 mA
r
on
- ON-State Resistance - 
0
2
4
6
8
10
12
0 2 4 6 8 10 12 14 16 18 20
OE Switching Frequency − MHz
TYPICAL I
CC
vs
OE SWITCHING FREQUENCY
CC
I − mA
V
CC
= 3.3 V
T
A
= 25°C
A and B Ports Open
One OE Switching
SN74CB3Q3125
QUADRUPLE FET BUS SWITCH
2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH
SCDS143B – OCTOBER 2003 – REVISED MARCH 2005
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3 )
V
CC
= 2.5 V V
CC
= 3.3 V
FROM TO
± 0.2 V ± 0.3 V
PARAMETER UNIT
(INPUT) (OUTPUT)
MIN MAX MIN MAX
f
OE
(1)
OE A or B 10 20 MHz
t
pd
(2)
A or B B or A 0.12 0.2 ns
t
en
OE A or B 1.5 6.7 1.5 6.6 ns
t
dis
OE A or B 1 4.6 1 5.3 ns
(1) Maximum switching frequency for control input (V
O
> V
CC
, V
I
= 5 V, R
L
≥ 1 M Ω , C
L
= 0)
(2) The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load
capacitance, when driven by an ideal voltage source (zero output impedance).
Figure 1. Typical r
on
vs V
I
Figure 2. Typical I
CC
vs OE Switching Frequency
5