CBT3244 データシートの表示（PDF） - Philips Electronics
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CBT3244 Datasheet PDF : 10 Pages
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Philips Semiconductors
Octal bus switch with Quad Output Enables
Preliminary specification
CBT3244
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
VIH
VIL
Tamb
DC supply voltage
High-level input voltage
Low-level Input voltage
Operating free-air temperature range
LIMITS
Min
Max
4.5
5.5
2.0
0.8
–40
+85
UNIT
V
V
V
°C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Tamb = –40°C to +85°C
Min
Typ1
Max
VIK
Input clamp voltage
VCC = 4.5V; II = –18mA
–1.2
II
Input leakage current
VCC = 5.5V; VI = GND or 5.5V
±5
ICC
Quiescent supply current2
VCC = 5.5V; IO = 0, VI = VCC or GND
50
∆ICC
Additional supply current per
input pin2
VCC = 5.5V, one input at 3.4V, other inputs at
VCC or GND
3.5
CI
Control pins
VI= 3V or 0, OE = VCC
3
CIO(OFF) Power-off leakage current
VO = 3V or 0
6
VCC = 4.5V; V1 = 0V; II = 64mA
5
7
ron3
On-resistance
VCC = 4.5V; V1 = 0V; II = 30mA
5
7
VCC = 4.5V; V1 = 0V; II = 15mA
10
15
NOTES:
1. All typical values are at VCC = 5V, TA = 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.
UNIT
V
µA
µA
mA
pF
pF
Ω
AC CHARACTERISTICS
GND = 0V; tR; CL = 50pF
SYMBOL
PARAMETER
tpd
Propagation delay1
ten
Output enable time
to High and Low level
tdis
Output disable time
from High and Low level
FROM
(INPUT)
TO
(OUTPUT)
A or B
OE
OE
B or A
A or B
A or B
74CBT3244
Tamb = –40°C to +85
VCC = +5.0V ±0.5V
Min
Max
.25
1.0
8.9
1.0
7.4
UNIT
ns
ns
ns
NOTES:
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).
1998 Dec 08
4
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