Philips Semiconductors
Product data
24-bit bus exchange switch with 12-bit output enables
CBT16212
AC CHARACTERISTICS
GND = 0 V; t
R;
C
L
= 50 pF
SYMBOL
t
pd
t
en
t
dis
PARAMETER
Propagation delay
1
Output enable time
to High and Low level
Output disable time
from High and Low level
FROM (INPUT)
A or B
S
S
TO
(OUTPUT)
B or A
A or B
A or B
V
CC
= 5.0 V
±0.5
V
Min
—
3.6
4.3
Max
0.25
0 25
8.0
8.0
ns
ns
ns
UNIT
NOTES:
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).
AC WAVEFORMS
V
M
= 1.5 V, V
IN
= GND to 3.0 V
3V
1.5 V
INPUT
0V
t
PLH
t
PHL
V
OH
1.5 V
OUTPUT
V
OL
1.5 V
1.5 V
TEST CIRCUIT AND WAVEFORMS
7V
From Output
Under Test
C
L
= 50 pF
500
Ω
S1
Open
GND
500
Ω
Load Circuit
TEST
t
pd
t
PLZ
/t
PZL
t
PHZ
/t
PZH
S1
open
7V
open
SA00028
Waveform 1. Input (An) to Output (Yn) Propagation Delays
DEFINITIONS
Load capacitance includes jig and probe capacitance;
C
L
=
see AC CHARACTERISTICS for value.
3V
Output Control
(Low-level
enabling )
t
PZL
Output
Waveform 1
S1 at 7 V
(see Note)
t
PZH
Output
Waveform 2
S1 at Open
(see Note)
1.5 V
1.5 V
0V
3.5 V
1.5 V
t
PHZ
V
OH
– 0.3 V
1.5 V
0V
Note:
Waveform 1 is for an output with internal conditions such that
the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that
the output is high except when disabled by the output control.
SA00012
t
PLZ
V
OL
+ 0.3 V
V
OL
V
OH
SA00029
Waveform 2. 3-State Output Enable and Disable Times
2001 Sep 28
5
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
