74hct245a IK Semicon Co., Ltd, 74hct245a Datasheet

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74hct245a

Manufacturer Part Number
74hct245a
Description
Octal 3-state Noninverting Bus Transceiver
Manufacturer
IK Semicon Co., Ltd
Datasheet

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Octal 3-State Noninverting
Bus Transceiver
High-Performance Silicon-Gate CMOS
device may be used as a level converter for interfacing TTL or NMOS
outputs to High Speed CMOS inputs.
for 2-way asynchronous communication between data buses. The device
has an active-low Output Enable pin, which is used to place the I/O ports
into high-impedance states. The Direction control determines whether
data flows from A to B or from B to A.
• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 μA
The IN74HCT245A is identical in pinout to the LS/ALS245.This
The IN74HCT245A is a 3-state noninverting transceiver that is used
LOGIC DIAGRAM
PIN 10 = GND
PIN 20=V
CC
X = don’t care
Output
Enable
H
L
L
Control Inputs
T
FUNCTION TABLE
A
ORDERING INFORMATION
= -55° to 125° C for all packages
PIN ASSIGNMENT
Direction
IN74HCT245AN Plastic
IN74HCT245ATDS SOIC
IN74HCT245ADW SOIC
H
X
L
TECHNICAL DATA
IN74HCT245A
Data Transmitted
from Bus B to
Bus A
Data Transmitted
from Bus A to
Bus B
Buses Isolated
(High Impedance
State)
Operation
Rev. 00

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74hct245a Summary of contents

Page 1

... TTL or NMOS outputs to High Speed CMOS inputs. The IN74HCT245A is a 3-state noninverting transceiver that is used for 2-way asynchronous communication between data buses. The device has an active-low Output Enable pin, which is used to place the I/O ports into high-impedance states ...

Page 2

... CC Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V outputs must be left open. Parameter and GND Pins CC SOIC Package+ Parameter and V should be constrained to the range GND≤(V IN OUT IN74HCT245A Value Unit -0.5 to +7 ± ...

Page 3

... Pin Output in High-Impedance 5.5 State GND, OUT CC I/O Pins GND 5 =0μA OUT V =2.4 V, Any One Input GND, Other IN CC Inputs 5.5 I =0μA OUT IN74HCT245A Guaranteed Limit ≤85 ≤125 Unit °C °C to 2.0 2.0 2.0 V 2.0 2.0 2.0 0.8 0.8 0.8 V 0.8 0.8 0.8 4.4 4.4 4.4 V 5.4 5.4 5.4 3.98 3.84 3.7 0.1 0.1 0.1 V 0.1 0.1 ...

Page 4

... V f Figure 1. Switching Waveforms =5.0 V ± 10 =50pF,Input °C Parameter to -55° Typical @25°C,V CC Figure 2. Switching Waveforms IN74HCT245A =t =6.0 ns Guaranteed Limit ≤85°C ≤125°C Unit ...

Page 5

... Figure 3. Test Circuit EXPANDED LOGIC DIAGRAM IN74HCT245A Figure 4. Test Circuit Rev. 00 ...

Page 6

... Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B ‑ 0.25 mm (0.010) per side. N SUFFIX PLASTIC DIP (MS - 001AD SEATING -T- PLANE SUFFIX SOIC (MS - 013AC SEATING PLANE IN74HCT245A Dimension, mm Symbol MIN MAX A 24.89 26.92 B 6.1 7.11 5. 0.36 0.56 F 1.14 1.78 G 2.54 7. 0° 10° K 2.92 3.81 7.62 8.26 L ...

Page 7

... TSSOP-20 IN74HCT245A Rev. 00 ...

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