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PDF CBT3244A Data sheet ( Hoja de datos )
| Número de pieza | CBT3244A | |
| Descripción | Octal bus switch | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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CBT3244A
Octal bus switch with quad output enables
Rev. 02 — 15 September 2005
Product data sheet
1. General description
The CBT3244A provides eight bits of high-speed TTL-compatible bus switching in a
standard '244 device pinout. The low ON-state resistance of the switch allows connections
to be made with minimal propagation delay.
The CBT3244A device is organized as two 4-bit low-impedance switches with separate
output-enable (OE) inputs. When OE is LOW, the switch is on and data can flow from
port A to port B, or vice versa. When OE is HIGH, the switch is open and high-impedance
state exists between the two ports.
The CBT3244A is characterized for operation from −40 °C to +85 °C.
2. Features
s Standard '244-type pinout
s 5 Ω switch connection between two ports
s TTL compatible control input levels
s Package options include:
x plastic small outline (SO20)
x shrink small outline (SSOP20)
x shrink small outline, QSOP (SSOP20)
x thin shrink small outline (TSSOP20)
x depopulated heatsink very thin quad flat package, no leads (DHVQFN20)
s Latch-up protection exceeds 500 mA per JESD78
s ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115 and 1000 V CDM per JESD22-C101
1 page  
Philips Semiconductors
CBT3244A
Octal bus switch with quad output enables
6. Functional description
Refer to Figure 1 “Logic diagram of CBT3244A”.
6.1 Function table
Table 3: Function selection
H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF state
Inputs
Outputs
1OE
2OE
1An, 1Bn
2An, 2Bn
L
L
1An = 1Bn
2An = 2Bn
L
H
1An = 1Bn
Z
H L Z 2An = 2Bn
HHZ Z
7. Limiting values
Table 4: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). [1]
Symbol Parameter
Conditions
Min
VCC supply voltage
−0.5
IIK input clamping current VI < 0 V
VI input voltage
-
[2] −1.2
IOK output clamping current VO < 0 V
-
VO output voltage
output in OFF or HIGH state [2] −0.5
IO output current
output in LOW state
Tstg storage temperature
-
−65
Max
+7.0
−18
+7.0
−50
+7.0
128
+150
Unit
V
mA
V
mA
V
mA
°C
[1] The performance capability of a high-performance integrated circuit in conjunction with its thermal
environment can create junction temperatures which are detrimental to reliability. The maximum junction
temperature of this integrated circuit should not exceed 150 °C.
[2] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
8. Recommended operating conditions
Table 5: Operating conditions
Symbol Parameter
Conditions
Min Typ Max Unit
VCC
VIH
VIL
Tamb
supply voltage
4.5 -
HIGH-state input voltage
2.0 -
LOW-state input voltage
--
ambient temperature
operating in free-air −40 -
5.5 V
-V
0.8 V
+85 °C
9397 750 13362
Product data sheet
Rev. 02 — 15 September 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
5 of 18
5 Page 
Philips Semiconductors
CBT3244A
Octal bus switch with quad output enables
SSOP20: plastic shrink small outline package; 20 leads; body width 3.9 mm; lead pitch 0.635 mm SOT724-1
D
y
Z
20
c
11
EA
X
HE v M A
1
e
1/2 e
10
bp
wM
A2
A1
(A3) A
Lp
L
detail X
θ
0 2.5 5 mm
scale
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
UNIT
A
max.
A1
A2
A3
bp
c D(1) E(1) e
HE
L
mm
1.73
0.25
0.10
1.55
1.40
0.25
0.31
0.20
0.25
0.18
8.8
8.6
4.0
3.8
0.635
6.2
5.8
1
Note
1. Plastic or metal protrusions of 0.2 mm maximum per side are not included.
Lp v w y Z(1) θ
0.89
0.41
0.25
0.18
0.1
1.67
1.28
8o
0o
OUTLINE
VERSION
SOT724-1
IEC
REFERENCES
JEDEC
JEITA
MO-137
EUROPEAN
PROJECTION
ISSUE DATE
01-07-04
03-02-18
Fig 12. Package outline SOT724-1 (SSOP20) (QSOP20)
9397 750 13362
Product data sheet
Rev. 02 — 15 September 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
11 of 18
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| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet CBT3244A.PDF ] | |
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