9397 750 13362 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 02 — 15 September 2005 5 of 18
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
7. Limiting values
[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 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
HHZZ
Table 4: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
[1]
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage −0.5 +7.0 V
I
IK
input clamping current V
I
<0V - −18 mA
V
I
input voltage
[2]
−1.2 +7.0 V
I
OK
output clamping current V
O
<0V - −50 mA
V
O
output voltage output in OFF or HIGH state
[2]
−0.5 +7.0 V
I
O
output current output in LOW state - 128 mA
T
stg
storage temperature −65 +150 °C
Table 5: Operating conditions
Symbol Parameter Conditions Min Typ Max Unit
V
CC
supply voltage 4.5 - 5.5 V
V
IH
HIGH-state input voltage 2.0 - - V
V
IL
LOW-state input voltage - - 0.8 V
T
amb
ambient temperature operating in free-air −40 - +85 °C
