The CBT3384 provides ten 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 CBT3384 device is organized as two 5-bit bus switches with two separate output
enable (1OE, 2OE)inputs. When nOE is LOW, the switch is on and port A is connected to
the B port. When nOE is HIGH, each switch is disabled.
The CBT3384 is characterized for operation from −40 °C to +85 °C.
2.Features
n 5 Ω switch connection between two ports
n TTL-compatible control input levels
n Multiple package options
n See CBTD3384 for CBT3384 with level shifting diodes
n Latch-up protection exceeds 100 mA per JESD78
n ESD protection:
u HBM JESD22-A114E exceeds 2000 V
u CDM JESD22-C101C exceeds 1000 V
3.Ordering information
Table 1.Ordering information
Type
number
CBT3384D−40 °C to +85 °CSO24plastic small outline package; 24 leads; body width 7.5 mmSOT137-1
CBT3384DB −40 °C to +85 °CSSOP24plastic shrink small outline package; 24 leads;
CBT3384DK −40 °C to +85 °CSSOP24
CBT3384PW −40 °C to +85 °CTSSOP24 plastic thin shrink small outline package; 24 leads;
[1] Also known as QSOP24 package
Package
Temperature range NameDescriptionVersion
SOT340-1
body width 5.3 mm
[1]
plastic shrink small outline package; 24 leads; body
width 3.9 mm; lead pitch 0.635 mm
body width 4.4 mm
SOT556-1
SOT355-1
Page 2
NXP Semiconductors
4.Functional diagram
CBT3384
10-bit bus switch with 5-bit output enables
Fig 1.Logic diagram
5.Pinning information
5.1 Pinning
CBT3384
1
1OEV
2
1B12B5
3
1A12A5
4
1A22A4
5
1B22B4
6
1B32B3
7
1A32A3
8
1A42A2
9
1B42B2
10
1B52B1
11
1A52A1
12
GND2OE
001aak878
1A1
1A5
1OE
2A1
2A5
2OE
3
11
1
14
22
13
2
1B1
10
1B5
15
2B1
23
2B5
001aak877
CBT3384
24
CC
23
22
21
20
19
18
17
16
15
14
13
1
1OEV
2
1B12B5
3
1A12A5
4
1A22A4
5
1B22B4
6
1B32B3
7
1A32A3
8
1A42A2
9
1B42B2
10
1B52B1
11
1A52A1
12
GND2OE
001aak879
24
CC
23
22
21
20
19
18
17
16
15
14
13
Fig 2.Pin configuration for SO24 (SOT137-1)Fig 3.Pin configuration for SSOP24 (SOT340-1) and
Product data sheetRev. 06 — 2 November 20093 of 14
[1]
Page 4
NXP Semiconductors
7.Limiting values
CBT3384
10-bit bus switch with 5-bit output enables
Table 4.Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
T
=−40°C to +85°C, unless otherwise specified.
amb
[1]
SymbolParameterConditionsMinMaxUnit
V
CC
V
I
I
O
I
IK
T
stg
[1] Stresses beyond those listed may cause permanent damage to the device.These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under Section 8. is not implied. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
[2] The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
Product data sheetRev. 06 — 2 November 20094 of 14
= −40 °C to +85 °CUnit
amb
MinTyp
[1]
Max
--3µA
--2.5mA
3.63.94.2V
-10.0-pF
Page 5
NXP Semiconductors
CBT3384
10-bit bus switch with 5-bit output enables
Table 6.Static characteristics
…continued
Voltages are referenced to GND (ground = 0 V).
SymbolParameterConditionsT
R
ON
[1] All typical values are at VCC=5V, T
[2] This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
[3] Measured by the voltage drop between the nAn and the nBn terminals at the indicated current through the switch. ON resistance is
ON resistanceVCC= 4.5 V; VI=0V; II=64mA
= 4.5 V; VI=0V; II=30mA
V
CC
= 4.5 V; VI= 2.4 V; II= −15 mA
V
CC
=25°C.
amb
determined by the lowest voltage of the two (nAn or nBn) terminals.
[3]
[3]
[3]
= −40 °C to +85 °CUnit
amb
MinTyp
[1]
Max
-57Ω
-57Ω
-1015Ω
10. Dynamic characteristics
Table 7.Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7.
Symbol ParameterConditionsT
MinTypMaxMinMax
t
pd
propagation delaynAn, nBn to nBn, nAn;
see
Figure 5
[1][2]
VCC = 5.0 V ± 0.5 V--0.25-0.25ns
t
PZH
t
PZL
t
PHZ
t
PLZ
OFF-state to HIGH
propagation delay
OFF-state to LOW
propagation delay
HIGH to OFF-state
propagation delay
LOW to OFF-state
propagation delay
nOE to nAn or nBn;
see
Figure 6
= 5.0 V ± 0.5 V1.22.35.71.25.6ns
V
CC
nOE to nAn or nBn;
see
Figure 6
= 5.0 V ± 0.5 V1.22.35.71.26.0ns
V
CC
nOE to nAn or nBn;
see
Figure 6
= 5.0 V ± 0.5 V1.73.65.21.75.5ns
V
CC
nOE to nAn or nBn;
see
Figure 6
= 5.0 V ± 0.5 V1.72.75.21.76.6ns
V
CC
= 25 °CT
amb
= −40 °C to +85 °C Unit
amb
[1] 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).
Product data sheetRev. 06 — 2 November 20096 of 14
Page 7
NXP Semiconductors
12. Test information
negative
pulse
0 V
positive
pulse
0 V
CBT3384
10-bit bus switch with 5-bit output enables
t
V
CC
DUT
W
V
M
t
r
t
f
V
M
t
W
V
EXT
R
V
O
C
L
R
L
L
V
I
90 %
V
M
10 %
t
f
t
10 %
r
90 %
V
M
V
I
R
T
V
I
G
001aae331
Test data is given in Table 9.
All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz; Zo=50Ω.
The outputs are measured one at a time with one transition per measurement.
Definitions for test circuit:
RL = Load resistance.
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
V
= External voltage for measuring switching times.
EXT
Fig 7.Test circuit for measuring switching times
Table 9.Test data
Supply voltageInputLoadV
V
I
tr, t
f
C
L
R
L
t
EXT
PLH
, t
PHL
t
PLZ
, t
PZL
t
PHZ
VCC = 5.0 V ± 0.5 VGND to 3.0 V ≤ 2.5 ns50 pF500 Ωopen7.0 Vopen
Product data sheetRev. 06 — 2 November 200911 of 14
Page 12
NXP Semiconductors
10-bit bus switch with 5-bit output enables
CBT3384
14. Abbreviations
Table 10. Abbreviations
AcronymDescription
CDMCharged Device Model
DUTDevice Under Test
ESDElectroStatic Discharge
FETField Effect Transistor
HBMHuman Body Model
PRRPulse Rate Repetition
TTLTransistor-Transistor Logic
Product data sheetRev. 06 — 2 November 200912 of 14
Page 13
NXP Semiconductors
16. Legal information
16.1Data sheet status
CBT3384
10-bit bus switch with 5-bit output enables
Document status
Objective [short] data sheetDevelopmentThis document contains data from the objective specification for product development.
Preliminary [short] data sheet QualificationThis document contains data from the preliminary specification.
Product [short] data sheetProductionThis document contains the product specification.
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s)described in this document may have changed since this document waspublished and may differin case of multiple devices.The latestproduct status
information is available on the Internet at URL
[1][2]
Product status
16.2Definitions
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internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
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Short data sheet — A short data sheet is an extract from a full data sheet
with thesame product type number(s) and title. Ashort data sheet is intended
for quickreference only and should not be relied upon to contain detailedand
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
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General — Information in this document is believed to be accurate and
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malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
[3]
http://www.nxp.com.
Definition
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute MaximumRatings System of IEC 60134) maycause permanent
damage to the device. Limiting valuesare stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at
http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
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Please be aware that important notices concerning this document and the product(s)
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