CBT3245A-Q100
Octal bus switch
Rev. 1 — 20 March 2013
Product data sheet
1. General description
The CBT3245A-Q100 provides 8 bits of high-speed TTL-compatible bus switching. The
low ON resistance of the switch allows connections to be made with minimal propagation
delay.
The CBT3245A-Q100 is organized as one 8-bit bus switches with one output enable (OE)
input. When OE is LOW, the switch is on and port A is connected to the B port. When OE
is HIGH, each switch is disabled.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 3) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 3)
Specified from
40 C
to +85
C
5
switch connection between two ports
TTL-compatible control input levels
Multiple package options
Latch-up protection exceeds 500 mA per JESD78
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115B exceeds 150 V (C = 200 pF, R = 0
)
3. Ordering information
Table 1.
Ordering information
Package
Temperature
range
CBT3245AD-Q100
40 C
to +85
C
Name
SO20
TSSOP20
DHVQFN20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
plastic dual-in-line compatible thermal enhanced
very thin quad flat package; no leads; 20 terminals;
body 2.5
4.5
0.85 mm
Version
SOT163-1
SOT360-1
SOT764-1
Type number
CBT3245APW-Q100
40 C
to +85
C
CBT3245ABQ-Q100
40 C
to +85
C
Nexperia
CBT3245A-Q100
Octal bus switch
4. Functional diagram
2
18
A1
B1
9
A8
OE
19
11
B8
001aao117
Fig 1.
Logic diagram
5. Pinning information
5.1 Pinning
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9
&&
2(
%
%
%
%
%
*1'
*1'
%
%
%
QF
&%7$4
QF
$
$
$
$
$
$
$
$
9
&&
2(
%
%
%
%
%
%
%
%
DDD
$
$
$
$
$
$
$
$
*1'
DDD
7UDQVSDUHQW WRS YLHZ
(1) This is not a supply pin. The substrate is attached to this
pad using conductive die attach material. There is no
electrical or mechanical requirement to solder this pad.
However, if it is soldered, the solder land should remain
floating or be connected to GND.
Fig 2.
Pin configuration for SOT163-1 (SO20) and
SOT360-1 (TSSOP20)
Fig 3.
Pin configuration for SOT764-1 (DHVQFN20)
CBT3245A_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 20 March 2013
2 of 14
Nexperia
CBT3245A-Q100
Octal bus switch
5.2 Pin description
Table 2.
Symbol
n.c.
A1 to A8
GND
B1 to B8
OE
V
CC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11
19
20
Description
not connected
data input/output (A port)
ground (0 V)
data input/output (B port)
output enable input (active LOW)
positive supply voltage
6. Functional description
Table 3.
Input
OE
L
H
[1]
Function selection
[1]
Input/output
An, Bn
An = Bn
Z
H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
[1]
T
amb
=
40
C to +85
C, unless otherwise specified.
Symbol
V
CC
V
I
I
OK
V
O
I
O
I
IK
T
stg
[1]
Parameter
supply voltage
input voltage
output clamping current
output voltage
output current
input clamping current
storage temperature
Conditions
[2]
Min
0.5
0.5
50
[2]
Max
+7.0
+7.0
-
+7.0
128
-
+150
Unit
V
V
mA
V
mA
mA
C
V
O
< 0 V
V
O
< 0 V
V
I
= 0 V
0.5
-
50
65
Stresses beyond the listed ones, may permanently damage the device. The ratings are stress ratings only and functional operation of
the device at or beyond any conditions, other than those conditions indicated in
Section 8.,
is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
[2]
CBT3245A_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 20 March 2013
3 of 14
Nexperia
CBT3245A-Q100
Octal bus switch
8. Recommended operating conditions
Table 5.
Operating conditions
All unused control inputs of the device must be held at V
CC
or GND to ensure proper device operation.
Symbol
V
CC
V
IH
V
IL
T
amb
Parameter
supply voltage
HIGH-level input voltage
LOW-level input voltage
ambient temperature
operating in free air
Conditions
Min
4.0
2.0
-
40
Typ
-
-
-
-
Max
5.5
-
0.8
+85
Unit
V
V
V
C
9. Static characteristics
Table 6.
Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol
V
IK
I
I
I
CC
I
CC
C
I
C
io(off)
R
ON
Parameter
input clamping voltage
input leakage current
supply current
additional supply current
input capacitance
off-state input/output
capacitance
ON resistance
Conditions
V
CC
= 4.5 V; I
I
=
18
mA
V
CC
= 5.5 V; V
I
= GND or 5.5 V
V
CC
= 5.5 V; I
O
= 0 mA;
V
I
= V
CC
or GND
per input pin; V
CC
= 5.5 V; 1 input at
3.4 V, other inputs at V
CC
or GND
control pins; V
I
= 3 V or 0 V
port off; V
I
= 3 V or 0 V; OE = V
CC
V
CC
= 4.5 V; V
I
= 0 V; I
I
= 64 mA
V
CC
= 4.5 V; V
I
= 0 V; I
I
= 30 mA
V
CC
= 4.5 V; V
I
= 2.4 V; I
I
=
15
mA
[1]
[2]
[3]
All typical values are at V
CC
= 5 V, T
amb
= 25
C.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
Measured by the voltage drop between the An and the Bn terminals at the indicated current through the switch. The lowest voltage of
the two (An or Bn) terminals, determines ON resistance.
[3]
[3]
[3]
[2]
T
amb
=
40 C
to +85
C
Min
-
-
-
-
-
-
-
-
-
Typ
[1]
-
-
1
-
3.2
6.6
5
5
10
Max
1.2
5
3
3.5
-
-
7
7
15
Unit
V
A
A
mA
pF
pF
CBT3245A_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 20 March 2013
4 of 14
Nexperia
CBT3245A-Q100
Octal bus switch
10. Dynamic characteristics
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see
Figure 6.
Symbol
t
pd
t
en
t
dis
Parameter
propagation delay
enable time
disable time
Conditions
An, Bn to Bn, An; see
Figure 4
V
CC
= 5.0 V
0.5 V
OE to An or Bn; see
Figure 5
V
CC
= 5.0 V
0.5 V
OE to An or Bn; see
Figure 5
V
CC
= 5.0 V
0.5 V
[1]
[2]
[2]
[2]
[1][2]
T
amb
=
40 C
to +85
C
Unit
Min
-
1.0
1.0
Max
0.25
5.9
6.0
ns
ns
ns
The propagation delay is the calculated RC time constant of the typical ON resistance of the switch and the specified load capacitance,
when driven by an ideal voltage source (zero output impedance).
t
pd
is the same as t
PLH
and t
PHL
.
t
en
is the same as t
PZL
and t
PZH
.
t
dis
is the same as t
PLZ
and t
PHZ
.
11. Waveforms
V
I
An, Bn input
GND
t
PHL
V
OH
Bn, An output
V
OL
V
M
001aam475
V
M
t
PLH
Measurement points are given in
Table 8.
Logic levels: V
OL
and V
OH
are typical output voltage levels that occur with the output load.
Fig 4.
The data input (An, Bn) to output (Bn, An) propagation delay times
CBT3245A_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 20 March 2013
5 of 14
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