參數(shù)資料
型號(hào)： CBTS3257
英文描述： Quad 1-of-2 multiplexer/demultiplexer with Schottky diode
中文描述： 四1 - 2復(fù)用器/解復(fù)用器的肖特基二極管
文件頁(yè)數(shù)： 7/11頁(yè)
文件大?。?/td> 105K
代理商： CBTS3257
Philips Semiconductors
Product data
CBTS3257
Quad 1-of-2 multiplexer/demultiplexer
with Schottky diode
2002 Sep 27
5
AC CHARACTERISTICS
Tamb = –40 to +85 °C; CL = 50 pF
TO
LIMITS
SYMBOL
PARAMETER
FROM (INPUT)
TO
(OUTPUT)
VCC = +5.0 V ±0.5 V
UNIT
(OUTPUT)
MIN
MAX
tpd
Propagation delay1
A or B
B or A
—
0.25
ns
tpd
Propagation delay
S
A
1.6
5.0
ns
t
Output enable time
OE
A or B
1.8
5.1
ns
ten
to High and Low level
S
B
1.6
5.2
ns
t
Output disable time
OE
A or B
2.2
5.5
ns
tdis
from High and Low level
S
B
1.0
5.0
ns
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,
when driven by an ideal voltage source (zero output impedance).
AC WAVEFORMS
VM = 1.5 V, VIN = GND to 3.0 V
INPUT
1.5 V
OUTPUT
tPLH
tPHL
SA00028
1.5 V
3 V
0 V
VOH
VOL
Waveform 1. Input to Output Propagation Delays
Output Control
(Low-level
enabling )
1.5 V
tPZH
tPHZ
VOH
VOL
tPZL
tPLZ
3.5 V
0 V
VOL + 0.3 V
VOH – 0.3 V
SA00029
1.5 V
0 V
3 V
Output
Waveform 1
S1 at 7 V
(see Note)
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.
Output
Waveform 2
S1 at Open
(see Note)
Waveform 2. 3-State Output Enable and Disable Times
NOTES:
1. tPLZ and tPHZ are the same as tdis.
2. tPZL and tPZH are the same as ten.
3. tPLH and tPHL are the same as tpd.
TEST CIRCUIT AND WAVEFORMS
CL = 50 pF
500
Load Circuit
DEFINITIONS
CL =
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
TEST
S1
tpd
open
tPLZ/tPZL
7 V
tPHZ/tPZH
open
SA00012
500
From Output
Under Test
S1
7 V
Open
GND
NOTES:
1. All input pulses are supplied by generators having the following
characteristics: PRR
≤ 10 MHz, ZO = 50 , tr ≤ 2.5 ns, tf ≤ 2.5 ns.
2. The outputs are measured one at a time with one transition per
measurement.
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