CBT3257 Philips Semiconductors, CBT3257 Datasheet - Page 5

• Manufacturer Part Number: CBT3257
• Description: Quad 1-of-2 multiplexer/demultiplexer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
T
NOTE:
1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance,
AC WAVEFORMS
V
NOTES:
1. t
2. t
3. t
2002 Dec 13
amb
M
Output Control
Quad 1-of-2 multiplexer/demultiplexer
OUTPUT
SYMBOL
when driven by an ideal voltage source (zero output impedance).
Waveform 1
Waveform 2
= 1.5 V, V
S1 at Open
INPUT
PLZ
PZL
PLH
(see Note)
(see Note)
(Low-level
Waveform 2. 3-State Output Enable and Disable Times
= -40 to +85 °C; C
enabling )
S1 at 7 V
t
t
t
t
Output
Output
dis
pd
pd
en
and t
and t
Waveform 1. Input to Output Propagation Delays
and t
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.
t
PHZ
PZH
PZH
PHL
IN
t
PZL
= GND to 3.0 V
1.5 V
are the same as t
are the same as t
are the same as t
Propagation delay
Propagation delay
Output enable time
Output enable time
to High and Low level
Output disable time
Output disable time
from High and Low level
t
PLH
1.5 V
L
= 50 pF
1.5 V
1.5 V
1.5 V
PARAMETER
dis
en
pd
1
t
PHZ
t
.
.
.
PLZ
1.5 V
1.5 V
t
PHL
V
V
OL
OH
+ 0.3 V
- 0.3 V
1.5 V
SA00029
SA00028
3 V
0 V
3.5 V
V
V
0 V
OL
OH
FROM (INPUT)
3 V
0 V
V
V
OH
OL
A or B
OE
OE
S
S
S
5
1. All input pulses are supplied by generators having the following
2. The outputs are measured one at a time with one transition per
TEST CIRCUIT AND WAVEFORMS
NOTES:
characteristics: PRR ≤ 10 MHz, Z
measurement.
(OUTPUT)
DEFINITIONS
C
From Output
Under Test
B or A
A or B
A or B
L
TO
=
A
B
B
C
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
L
= 50 pF
t
t
PHZ
PLZ
TEST
V
MIN
t
1.6
1.8
1.6
2.2
1.0
pd
—
/t
/t
CC
PZL
PZH
500 Ω
Load Circuit
= +5.0 V ±0.5 V
500 Ω
LIMITS
O
= 50 Ω, t
open
open
7 V
S1
S1
MAX
0.25
5.0
5.1
5.2
5.5
5.0
r
≤ 2.5 ns, t
CBT3257
7 V
GND
SA00012
Open
Product data
f
UNIT
≤ 2.5 ns.
ns
ns
ns
ns
ns
ns