cbt6820 NXP Semiconductors, cbt6820 Datasheet - Page 5

• Manufacturer Part Number: cbt6820
• Description: 20-bit Bus Switch With Precharged Outputs And Schottky Undershoot Protection For Live Insertion
• Manufacturer: NXP Semiconductors

1. All typical values are measured at T
2. Warranted but not production tested. The propagation delay is based on the RC time constant of the typical ON-state resistance of the
Philips Semiconductors
AC CHARACTERISTICS FOR V
GND = 0V; t
NOTE:
AC WAVEFORMS
V
2000 Jun 19
Waveform 1. Waveforms Showing the Input (An) to Output (Bn)
M
Output Control
Waveform 2. Waveforms Showing the 3-State Output Enable
20-bit bus switch with precharged outputs and
Schottky undershoot protection for live insertion
OUTPUT
switch and a load capacitance of 50pF, when driven by an ideal voltage source (zero output impedance)
Waveform 1
Waveform 2
SYMBOL
= 1.5V, V
INPUT
S1 at Open
(see Note)
(see Note)
(Low-level
S1 at 7 V
t
t
enabling
t
t
PZH
PHZ
t
PZL
PLZ
Output
Output
pd
r
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
IN
PZH
= t
t
PZL
= GND to 3.0V
f
1.5V
Propagation delay; An to Bn; Bn to An
3-State output enable time
OE to An; OE to Bn; BIASV = GND
3-State output enable time
OE to An; OE to Bn; BIASV = 3.0V
3-State output enable time
OE to An; OE to Bn; BIASV = GND
3-State output enable time
OE to An; OE to Bn; BIASV = 3.0V
t
2.5ns; C
PLH
1.5 V
Propagation Delays
and Disable Times
1.5 V
1.5 V
L
1.5V
= 50pF.
PARAMETER
t
PHZ
t
PLZ
amb
CC
= 25 C and V
1.5V
1.5 V
= 5.0V 0.5V RANGE
t
PHL
V
V
OL
OH
+ 0.3V
– 0.3V
1.5V
SA00029
2
CC
SA00028
3V
0V
3.5V
V
V
0V
= 5.0V
OL
OH
3 V
0 V
V
V
OH
OL
WAVEFORM
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:
1
2
2
2
2
characteristics: PRR
measurement.
DEFINITIONS
C
From Output
Under Test
L
=
C
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
L
= 50 pF
MIN
1.3
1.4
1.7
2.8
T
amb
t
t
PHZ
10 MHz, Z
PLZ
TEST
t
pd
/t
/t
= –40 to +85 C
PZL
PZH
LIMITS
TYP
500
3.1
2.9
2.8
4.4
Load Circuit
500
1
O
= 50 , t
open
open
7 V
S1
MAX
S1
0.25
5.3
4.6
4.5
6.6
r
Product specification
CBT6820
7 V
GND
SA00012
2.5 ns, t
Open
UNIT
f
ns
ns
ns
ns
ns
2.5 ns.