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CBT3244A Schematic ( PDF Datasheet ) - NXP Semiconductors

Teilenummer CBT3244A
Beschreibung Octal bus switch
Hersteller NXP Semiconductors
Logo NXP Semiconductors Logo 




Gesamt 18 Seiten
CBT3244A Datasheet, Funktion
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 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






CBT3244A Datasheet, Funktion
Philips Semiconductors
CBT3244A
Octal bus switch with quad output enables
9. Static characteristics
Table 6: Static characteristics
Tamb = 40 °C to +85 °C
Symbol Parameter
VIK input clamping voltage
ILI input leakage current
ICC quiescent supply current
ICC [2]
Ci
Cio
Ron [3]
additional quiescent supply current
(per input)
input capacitance (control pins)
input/output capacitance
ON-state resistance
Conditions
VCC = 4.5 V; II = 18 mA
VCC = 5.5 V; VI = GND or 5.5 V
VCC = 5.5 V; IO = 0 mA;
VI = VCC or GND
VCC = 5.5 V; one input at 3.4 V,
other inputs at VCC or GND
VI = 3 V or 0 V; nOE = VCC
nOE = VCC = 5.0 V
VCC = 4.5 V; VI = 0 V; II = 64 mA
VCC = 4.5 V; VI = 0 V; II = 30 mA
VCC = 4.5 V; VI = 2.4 V; II = 15 mA
Min Typ [1] Max Unit
- - 1.2 V
- - ±1 µA
- 1 3 µA
- - 2.5 mA
- 3 - pF
- 3 - pF
- 47
- 47
- 8 15
[1] All typical values are at VCC = 5 V; Tamb = 25 °C.
[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 A and the B terminals at the indicated current through the switch. ON-state resistance is
determined by the lowest voltage of the two (A or B) terminals.
10. Dynamic characteristics
Table 7: Dynamic characteristics
Tamb = 40 °C to +85 °C; VCC = 5.0 V ± 0.5 V; GND = 0 V; CL = 50 pF; unless otherwise specified.
Symbol Parameter
Conditions
Min Typ
tPD
propagation delay [1]
from nAn input to nBn output, or
from nBn input to nAn output
--
ten enable time [2]
from nOE input to nAn or nBn output
1.0
-
tdis disable time [3]
from nOE input to nAn or nBn output
1.0
-
Max
0.25
5.6
6.0
Unit
ns
ns
ns
[1] This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical ON-state
resistance of the switch and a load capacitance of 50 pF, when driven by an ideal voltage source (zero output impedance).
[2] Output enable time to HIGH and LOW level.
[3] Output disable time from HIGH and LOW level.
9397 750 13362
Product data sheet
Rev. 02 — 15 September 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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CBT3244A pdf, datenblatt
Philips Semiconductors
CBT3244A
Octal bus switch with quad output enables
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
D
y
Z
20
c
11
EA
X
HE v M A
pin 1 index
1
e
10
wM
bp
A2
A1
Q
(A3)
A
Lp
L
detail X
θ
0 2.5 5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c D(1) E(1) e HE L Lp Q
v
w
y Z (1) θ
mm
2
0.21
0.05
1.80
1.65
0.25
0.38
0.25
0.20
0.09
7.4
7.0
5.4
5.2
0.65
7.9
7.6
1.25
1.03
0.63
0.9
0.7
0.2 0.13 0.1
0.9
0.5
8o
0o
Note
1. Plastic or metal protrusions of 0.2 mm maximum per side are not included.
OUTLINE
VERSION
SOT339-1
IEC
REFERENCES
JEDEC
JEITA
MO-150
EUROPEAN
PROJECTION
ISSUE DATE
99-12-27
03-02-19
Fig 13. Package outline SOT339-1 (SSOP20)
9397 750 13362
Product data sheet
Rev. 02 — 15 September 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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