Philips CBT3244A Technical data
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INTEGRATED CIRCUITS
CBT3244A
Octal bus switch with quad output enables
Product data sheet
Philips
Semiconductors
2004 May 26
Philips Semiconductors Product data sheet
CBT3244AOctal bus switch with quad output enables
FEATURES
•Standard ’244-type pinout
•5 Ω switch connection between two ports
•TTL compatible control input levels
•Package options include plastic small outline (D), shrink small
outline (DB), QSOP (DS), and thin shrink small outline (TSSOP)
•Latch-up protection exceeds 500 mA per JESD78
•ESD protection exceeds 1000 V HBM per JESD22-A114,
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
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
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.
) inputs. When OE is
PIN CONFIGURATION — SO, SSOP, QSOP, and
TSSOP
SA00501
20
V
CC
2OE
19
1B1
18
2A4
17
1B2
16
2A3
15
1B3
14
2A2
13
12
2A1
1
1OE
2
1A1
3
2B4
4
1A2
5
2B3
6
1A3
7
2B2
8
1A4
9
2B1 1B4
10 11
GND
Figure 1. Pin configuration — SO, SSOP, QSOP, and TSSOP
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
1, 19 1OE, 2OE Output enable
2, 4, 6, 8 1A1–1A4 Inputs
11, 13, 15, 17 2A1–2A4 Inputs
18, 16, 14, 12 1B1–1B4 Outputs
9, 7, 5, 3 2B1–2B4 Outputs
10 GND Ground (0V)
20 V
CC
Positive supply voltage
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DWG NUMBER
20-Pin Plastic TSSOP –40 °C to 85 °C CBT3244APW CT3244A SOT360-1
20-Pin Plastic SSOP (QSOP) –40 °C to 85 °C CBT3244ADS CT3244ADS SOT724-1
20-Pin Plastic SSOP –40 °C to 85 °C CBT3244ADB CT3244A SOT339-1
20-Pin Plastic SO –40 °C to 85 °C CBT3244AD CBT3244AD SOT163-1
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
2004 May 26
2
Philips Semiconductors Product data sheet
SYMBOL
PARAMETER
UNIT
CBT3244AOctal bus switch with quad output enables
LOGIC SYMBOL
2
1A1
8
1A4
1
1OE
11
2A1
17
2A4
19
2OE
18
12
9
3
SA00503
1B1
1B4
2B1
2B4
FUNCTION TABLE
INPUTS OUTPUTS
1OE 2OE 1A, 1B 2A, 2B
L L 1A = 1B 2A = 2B
L H 1A = 1B Z
H L Z 2A = 2B
H H Z Z
H = High voltage level
L = Low voltage level
Z = High-impedance “off” state
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
CC
I
IK
V
I
I
OK
V
OUT
I
OUT
T
stg
DC supply voltage –0.5 to +7.0 V
DC input diode current VI < 0 V –18 mA
DC input voltage
DC output diode current VO < 0 V –50 mA
DC output voltage
DC output current output in LOW state 128 mA
Storage temperature range –65 to 150 °C
PARAMETER CONDITIONS RATING UNIT
3
3
1, 2
–1.2 to +7.0 V
output in Off or HIGH state –0.5 to +7 V
NOTES:
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 “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create ju nction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
LIMITS
Min Max
T
V
CC
V
V
amb
DC supply voltage 4.5 5.5 V
HIGH-level input voltage 2.0 — V
IH
LOW-level Input voltage — 0.8 V
IL
Operating free-air temperature range –40 +85 °C
2004 May 26
3
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