74CBTLV3245
8-bit bus switch with output enable
Rev. 2 — 15 December 2011
Product data sheet
1. General description
The 74CBTLV3245 is an 8-pole, single-throw bus switch. The device features a single
output enable input (OE) that controls eight switch channels. The switches are disabled
when OE is HIGH. Schmitt-trigger action at control inputs makes the circuit tolerant of
slower input rise and fall times. This device is fully specified for partial power-down
applications using I
OFF
. The I
OFF
circuitry disables the output, preventing the damaging
backflow current through the device when it is powered down.
2. Features and benefits
Supply voltage range from 2.3 V to 3.6 V
High noise immunity
Complies with JEDEC standard:
JESD8-5 (2.3 V to 2.7 V)
JESD8-B/JESD36 (2.7 V to 3.6 V)
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
CDM AEC-Q100-011 revision B exceeds 1000 V
5
switch connection between two ports
Rail to rail switching on data I/O ports
CMOS low power consumption
Latch-up performance exceeds 250 mA per JESD78B Class I level A
I
OFF
circuitry provides partial Power-down mode operation
Multiple package options
Specified from
40 C
to +85
C
and
40 C
to +125
C
NXP Semiconductors
74CBTLV3245
8-bit bus switch with output enable
3. Ordering information
Table 1.
Ordering information
Package
Temperature
range
74CBTLV3245DS
Name
Description
plastic shrink small outline package; 20 leads; body
width 3.9 mm; lead pitch 0.635 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
SOT724-1
SOT360-1
SOT764-1
Type number
40 C
to +125
C
SSOP20
[1]
74CBTLV3245PW
40 C
to +125
C
TSSOP20
74CBTLV3245BQ
40 C
to +125
C
DHVQFN20
[1]
Also known as QSOP20 package
4. Functional diagram
A1
2
OE
19
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
18
B1
17
B2
16
B3
15
B4
14
B5
13
B6
12
B7
11
B8
001aan323
Fig 1.
Logic symbol
nA
nB
OE
001aan324
Fig 2.
Logic diagram (one switch)
74CBTLV3245
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 15 December 2011
2 of 18
NXP Semiconductors
74CBTLV3245
8-bit bus switch with output enable
5. Pinning information
5.1 Pinning
74CBTLV3245
74CBTLV3245
n.c.
A1
A2
A3
A4
A5
A6
A7
A8
1
2
3
4
5
6
7
8
9
20 V
CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
001aan325
n.c.
A1
A2
A3
A4
A5
A6
A7
A8
1
2
3
4
5
6
7
8
9
20 V
CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
GND 10
GND 10
001aan326
Fig 3.
Pin configuration for TSSOP20 (SOT360-1)
Fig 4.
Pin configuration for SSOP20 (SOT724-1)
74CBTLV3245
terminal 1
index area
A1
A2
A3
A4
A5
A6
A7
A8
2
3
4
5
6
7
8
9
GND 10
B8 11
GND
(1)
20 V
CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
n.c.
1
001aan327
Transparent top view
(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 5.
Pin configuration for DHVQFN20 (SOT764-1)
74CBTLV3245
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 15 December 2011
3 of 18
NXP Semiconductors
74CBTLV3245
8-bit bus switch with output enable
5.2 Pin description
Table 2.
Symbol
nc
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). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
V
I
V
SW
I
IK
I
SK
I
SW
I
CC
I
GND
T
stg
P
tot
[1]
[2]
Parameter
supply voltage
input voltage
switch voltage
input clamping current
switch clamping current
switch current
supply current
ground current
storage temperature
total power dissipation
Conditions
[1]
Min
0.5
0.5
0.5
50
50
-
-
100
65
Max
+4.6
+4.6
V
CC
+ 0.5
-
-
128
+100
-
+150
500
Unit
V
V
V
mA
mA
mA
mA
mA
C
mW
enable and disable mode
V
I
<
0.5
V
V
I
<
0.5
V
V
SW
= 0 V to V
CC
[1]
T
amb
=
40 C
to +125
C
[2]
-
The minimum input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For SSOP20 and TSSOP20 packages: above 60
C
the value of P
tot
derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60
C
the value of P
tot
derates linearly at 4.5 mW/K.
74CBTLV3245
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 15 December 2011
4 of 18
NXP Semiconductors
74CBTLV3245
8-bit bus switch with output enable
8. Recommended operating conditions
Table 5.
Symbol
V
CC
V
I
V
SW
T
amb
t/V
[1]
Recommended operating conditions
Parameter
supply voltage
input voltage
switch voltage
ambient temperature
input transition rise and fall rate
V
CC
= 2.3 V to 3.6 V
[1]
Conditions
Min
2.3
0
Max
3.6
3.6
V
CC
+125
200
Unit
V
V
V
C
ns/V
enable and disable mode
0
40
-
Applies to control signal levels.
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
IH
V
IL
I
I
I
S(OFF)
I
S(ON)
I
OFF
I
CC
HIGH-level
input voltage
Conditions
V
CC
= 2.3 V to 2.7 V
V
CC
= 3.0 V to 3.6 V
T
amb
=
40 C
to +85
C
Min
1.7
2.0
-
-
-
-
-
-
-
Typ
[1]
-
-
-
-
-
-
-
-
-
Max
-
-
0.7
0.9
1
1
1
10
10
T
amb
=
40 C
to +125
C
Unit
Min
1.7
2.0
-
-
-
-
-
-
-
Max
-
-
0.7
0.9
20
20
20
50
50
V
V
V
V
A
A
A
A
A
LOW-level input V
CC
= 2.3 V to 2.7 V
voltage
V
CC
= 3.0 V to 3.6 V
input leakage
current
pin OE; V
I
= GND to V
CC
;
V
CC
= 3.6 V
OFF-state
V
CC
= 3.6 V; see
Figure 6
leakage current
ON-state
V
CC
= 3.6 V; see
Figure 7
leakage current
power-off
V
I
or V
O
= 0 V to 3.6 V;
leakage current V
CC
= 0 V
supply current
V
I
= GND or V
CC
; I
O
= 0 A;
V
SW
= GND or V
CC
;
V
CC
= 3.6 V
pin OE; V
I
= V
CC
0.6 V;
V
SW
= GND or V
CC
;
V
CC
= 3.6 V
pin OE; V
CC
= 3.3 V;
V
I
= 0 V to 3.3 V
V
CC
= 3.3 V; V
I
= 0 V to 3.3 V
V
CC
= 3.3 V; V
I
= 0 V to 3.3 V
[2]
I
CC
additional
supply current
input
capacitance
OFF-state
capacitance
ON-state
capacitance
-
-
300
-
2000
A
C
I
C
S(OFF)
C
S(ON)
-
-
-
0.9
5.2
14.3
-
-
-
-
-
-
-
-
-
pF
pF
pF
[1]
[2]
All typical values are measured at T
amb
= 25
C.
One input at 3 V, other inputs at V
CC
or GND.
74CBTLV3245
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 15 December 2011
5 of 18
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