9397 750 13362 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 02 — 15 September 2005 6 of 18
Philips Semiconductors
CBT3244A
Octal bus switch with quad output enables
9. Static characteristics
[1] All typical values are at V
CC
=5V; T
amb
=25°C.
[2] This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
[3] Measured by the voltage drop between the A and the B terminals at the indicated current through the switch. ON-state resistance is
determined by the lowest voltage of the two (A or B) terminals.
10. Dynamic characteristics
[1] This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical ON-state
resistance of the switch and a load capacitance of 50 pF, when driven by an ideal voltage source (zero output impedance).
[2] Output enable time to HIGH and LOW level.
[3] Output disable time from HIGH and LOW level.
Table 6: Static characteristics
T
amb
=
−
40
°
C to +85
°
C
Symbol Parameter Conditions Min Typ
[1]
Max Unit
V
IK
input clamping voltage V
CC
= 4.5 V; I
I
= −18 mA - - −1.2 V
I
LI
input leakage current V
CC
= 5.5 V; V
I
= GND or 5.5 V - - ±1 µA
I
CC
quiescent supply current V
CC
= 5.5 V; I
O
= 0 mA;
V
I
=V
CC
or GND
-13µA
∆I
CC
[2]
additional quiescent supply current
(per input)
V
CC
= 5.5 V; one input at 3.4 V,
other inputs at V
CC
or GND
- - 2.5 mA
C
i
input capacitance (control pins) V
I
= 3 V or 0 V; nOE = V
CC
-3-pF
C
io
input/output capacitance nOE=V
CC
= 5.0 V - 3 - pF
R
on
[3]
ON-state resistance V
CC
= 4.5 V; V
I
=0V; I
I
=64mA - 4 7 Ω
V
CC
= 4.5 V; V
I
=0V; I
I
=30mA - 4 7 Ω
V
CC
= 4.5 V; V
I
= 2.4 V; I
I
=15mA - 8 15 Ω
Table 7: Dynamic characteristics
T
amb
=
−
40
°
C to +85
°
C; V
CC
= 5.0 V
±
0.5V; GND=0V; C
L
= 50 pF; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
t
PD
propagation delay
[1]
from nAn input to nBn output, or
from nBn input to nAn output
- - 0.25 ns
t
en
enable time
[2]
from nOE input to nAn or nBn output 1.0 - 5.6 ns
t
dis
disable time
[3]
from nOE input to nAn or nBn output 1.0 - 6.0 ns
