CBT3384
10-bit bus switch with 5-bit output enables
Rev. 7 — 6 March 2019
Product data sheet
1. General description
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.
2. Features
•
•
•
•
•
5 Ω switch connection between two ports
TTL-compatible control input levels
See CBTD3384 for CBT3384 with level shifting diodes
Latch-up protection exceeds 100 mA per JESD78
ESD protection:
•
HBM JESD22-A114E exceeds 2000 V
•
CDM JESD22-C101C exceeds 1000 V
•
Specified from -40 °C to +85 °C
3. Ordering information
Table 1. Ordering information
Type
Package
number
Temperature range Name
CBT3384D
-40 °C to +85 °C
SO24
TSSOP24
CBT3384PW -40 °C to +85 °C
Description
plastic small outline package; 24 leads; body width 7.5 mm
plastic thin shrink small outline package; 24 leads;
body width 4.4 mm
Version
SOT137-1
SOT355-1
Nexperia
CBT3384
10-bit bus switch with 5-bit output enables
4. Functional diagram
1A1
3
2
1B1
1A5
1OE
2A1
11
1
14
10
1B5
15
2B1
2A5
2OE
22
13
23
2B5
001aak877
Fig. 1.
Logic diagram
5. Pinning information
5.1. Pinning
CBT3384
1OE
1B1
1A1
1A2
1B2
1B3
1A3
1A4
1B4
1
2
3
4
5
6
7
8
9
24 V
CC
23 2B5
22 2A5
21 2A4
20 2B4
19 2B3
18 2A3
17 2A2
16 2B2
15 2B1
14 2A1
13 2OE
001aak878
CBT3384
1OE
1B1
1A1
1A2
1B2
1B3
1A3
1A4
1B4
1
2
3
4
5
6
7
8
9
24 V
CC
23 2B5
22 2A5
21 2A4
20 2B4
19 2B3
18 2A3
17 2A2
16 2B2
15 2B1
14 2A1
13 2OE
001aak879
1B5 10
1A5 11
GND 12
1B5 10
1A5 11
GND 12
Fig. 2.
Pin configuration for SO24 (SOT137-1)
Fig. 3.
Pin configuration for TSSOP24 (SOT355-1)
5.2. Pin description
Table 2. Pin description
Symbol
1OE, 2OE
1A1 to 1A5
2A1 to 2A5
1B1 to 1B5
2B1 to 2B5
GND
V
CC
Pin
1, 13
3, 4, 7, 8, 11
14, 17, 18, 21, 22
2, 5, 6, 9, 10
15, 16, 19, 20, 23
12
24
Description
output enable input (active LOW)
data input/output (A port)
data input/output (A port)
data input/output (B port)
data input/output (B port)
ground (0 V)
positive supply voltage
CBT3384
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2019. All rights reserved
Product data sheet
Rev. 7 — 6 March 2019
2 / 11
Nexperia
CBT3384
10-bit bus switch with 5-bit output enables
6. Functional description
Table 3. Function selection
H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF-state.
Input
1OE
L
L
H
H
2OE
L
H
L
H
Input/output
1An, 1Bn
1An = 1Bn
1An = 1Bn
Z
Z
2An, 2Bn
2An = 2Bn
Z
2An = 2Bn
Z
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
T
amb
= -40 °C to +85 °C, unless otherwise specified.
Symbol
V
CC
V
I
I
O
I
IK
T
stg
[1]
Parameter
supply voltage
input voltage
output current
input clamping current
storage temperature
Conditions
[1]
V
O
< 0 V
V
I/O
= 0 V
Min
-0.5
-0.5
-
-50
-65
Max
+7.0
+7.0
±128
-
+150
Unit
V
V
mA
mA
°C
The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
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-state input voltage
LOW-state input voltage
ambient temperature
operating in free air
Conditions
Min
4.5
2.0
-
-40
Typ
-
-
-
-
Max
5.5
-
0.8
+85
Unit
V
V
V
°C
CBT3384
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2019. All rights reserved
Product data sheet
Rev. 7 — 6 March 2019
3 / 11
Nexperia
CBT3384
10-bit bus switch with 5-bit output enables
9. Static characteristics
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol
V
IK
I
I
I
CC
ΔI
CC
V
pass
C
I
C
io(off)
R
ON
Parameter
input clamping voltage
input leakage current
supply current
additional supply current
pass voltage
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; one input at
[2]
3.4 V, other inputs at V
CC
or GND
output HIGH; V
I
= V
CC
= 5.0 V;
I
O
= -100 μA
control pins; V
I
= 3 V or 0 V
port off; V
I
= 3 V or 0 V; nOE = 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]
T
amb
= -40 °C to +85 °C
Min
-
-
-
-
3.6
-
-
[3]
[3]
[3]
-
-
-
Typ
[1]
-
-
-
-
3.9
4.0
10.0
5
5
10
Max
-1.2
±1
3
2.5
4.2
-
-
7
7
15
Unit
V
μA
μA
mA
V
pF
pF
Ω
Ω
Ω
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 nAn and the nBn terminals at the indicated current through the switch. ON resistance is
determined by the lowest voltage of the two (nAn or nBn) terminals.
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see
Fig. 6.
Symbol Parameter
t
pd
propagation delay
Conditions
nAn, nBn to nBn, nAn;
see
Fig. 4
V
CC
= 5.0 V ± 0.5 V
t
PZH
t
PZL
t
PHZ
t
PLZ
OFF-state to HIGH nOE to nAn or nBn; see
Fig. 5
propagation delay
V
CC
= 5.0 V ± 0.5 V
OFF-state to LOW nOE to nAn or nBn; see
Fig. 5
propagation delay
V
CC
= 5.0 V ± 0.5 V
HIGH to OFF-state nOE to nAn or nBn; see
Fig. 5
propagation delay
V
CC
= 5.0 V ± 0.5 V
LOW to OFF-state nOE to nAn or nBn; see
Fig. 5
propagation delay
V
CC
= 5.0 V ± 0.5 V
[1][2]
-
1.2
1.2
1.7
1.7
-
2.3
2.3
3.6
2.7
0.25
5.7
5.7
5.2
5.2
-
1.2
1.2
1.7
1.7
0.25
5.6
6.0
5.5
6.6
ns
ns
ns
ns
ns
T
amb
= 25 °C
Min
Typ
Max
T
amb
= -40 °C to +85 °C Unit
Min
Max
[1]
[2]
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
.
CBT3384
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2019. All rights reserved
Product data sheet
Rev. 7 — 6 March 2019
4 / 11
Nexperia
CBT3384
10-bit bus switch with 5-bit output enables
10.1. Waveforms and test circuit
V
I
nAn, nBn input
GND
t
PHL
V
OH
nBn, nAn output
V
OL
V
M
V
M
001aak881
V
M
V
M
t
PLH
Measurement points are given in
Table 8.
V
OL
and V
OH
are typical output voltage levels that occur with the output load.
Fig. 4.
The data input (nAn, nBn) to output (nBn, nAn) propagation delay times
V
I
nOE input
GND
t
PLZ
output
LOW to OFF
OFF to LOW
3.5 V
V
M
V
OL
t
PHZ
output
HIGH to OFF
OFF to HIGH
V
OH
V
Y
V
M
GND
outputs
enabled
outputs
disabled
outputs
enabled
001aak298
V
M
V
M
t
PZL
V
X
t
PZH
Measurement points are given in
Table 8.
V
OL
and V
OH
are typical output voltage levels that occur with the output load.
Fig. 5.
Enable and disable times
Table 8. Measurement points
Supply voltage
Input
V
CC
V
I
V
M
1.5 V
V
CC
= 5.0 V ± 0.5 V GND to 3.0 V
Output
V
M
1.5 V
V
X
V
OL
+ 0.3 V
V
Y
V
OH
- 0.3 V
CBT3384
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2019. All rights reserved
Product data sheet
Rev. 7 — 6 March 2019
5 / 11
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