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54ACT245L データシートの表示(PDF) - National ->Texas Instruments

部品番号54ACT245L National-Semiconductor
National ->Texas Instruments National-Semiconductor
コンポーネント説明Octal Bidirectional Transceiver with TRI-STATE® Inputs/Outputs
54ACT245L Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Absolute Maximum Ratings (Note 1)
Recommended Operating
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
DC Input Diode Current (IIK)
VI = −0.5V
VI = VCC + 0.5V
DC Input Voltage (VI)
DC Output Diode Current (IOK)
VO = −0.5V
VO = VCC + 0.5V
DC Output Voltage (VO)
DC Output Source
or Sink Current (IO)
DC VCC or Ground Current
per Output Pin (ICC or IGND)
Storage Temperature (TSTG)
Junction Temperature (TJ)
CDIP
−0.5V to +7.0V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
±50 mA
±50 mA
−65˚C to +150˚C
175˚C
Conditions
Supply Voltage (VCC)
’AC
2.0V to 6.0V
’ACT
4.5V to 5.5V
Input Voltage (VI)
Output Voltage (VO)
Operating Temperature (TA)
54AC/ACT
0V to VCC
0V to VCC
−55˚C to +125˚C
Minimum Input Edge Rate (V/t)
’AC Devices
VIN from 30% to 70% of VCC
VCC @ 3.3V, 4.5V, 5.5V
Minimum Input Edge Rate (V/t)
125 mV/ns
’ACT Devices
VIN from 0.8V to 2.0V
VCC @ 4.5V, 5.5V
125 mV/ns
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recom-
mend operation of FACT® circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
Symbol
Parameter
VIH
Minimum High
Level Input
Voltage
VIL
Maximum Low
Level Input
Voltage
VOH
Minimum High
Level Output
Voltage
VOL
Maximum Low
Level Output
Voltage
IIN
Maximum Input
Leakage Current
54AC
VCC
TA =
Units
(V)
−55˚C to +125˚C
Conditions
Guaranteed
Limits
3.0
2.1
4.5
3.15
5.5
3.85
VOUT = 0.1V
V
or VCC − 0.1V
3.0
0.9
4.5
1.35
5.5
1.65
VOUT = 0.1V
V
or VCC − 0.1V
3.0
2.9
4.5
4.4
IOUT = −50 µA
V
5.5
5.4
3.0
2.4
(Note 2)
VIN = VIL or VIH
−12 mA
4.5
3.7
5.5
4.7
V
IOH
−24 mA
−24 mA
3.0
0.1
4.5
0.1
IOUT = 50 µA
V
5.5
0.1
3.0
0.50
(Note 2)
VIN = VIL or VIH
12 mA
4.5
0.50
5.5
0.50
V
IOL
24 mA
24 mA
5.5
±1.0
µA
VI = VCC, GND
3
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General Description
The ’AC/’ACT245 contains eight non-inverting bidirectional buffers with TRI-STATE outputs and is intended for bus-oriented applications. Current sinking capability is 24 mA at both the A and B ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidi rectional transceiver. Transmit (active-HIGH) enables data from A ports to B ports; Receive (active-LOW) enables data from B ports to A ports. The Output Enable input, when HIGH, disables both A and B ports by placing them in a HIGH Z condition.

Features
■ ICC and IOZ reduced by 50%
■ Noninverting buffers
■ Bidirectional data path
■ A and B outputs source/sink 24 mA
■ ’ACT245 has TTL-compatible inputs
■ Standard Microcircuit Drawing (SMD)
   — ’AC245: 5962-87758
   — ’ACT245: 5962-87663

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