74act643 IK Semicon Co., Ltd, 74act643 Datasheet

no-image

74act643

Manufacturer Part Number
74act643
Description
Octal 3-state Bus Transceiver
Manufacturer
IK Semicon Co., Ltd
Datasheet
Octal 3-State Bus Transceiver
High-Speed Silicon-Gate CMOS
HC/HCT643. The IN74ACT623 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
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; 0.1 µA @ 25°C
• Outputs Source/Sink 24 mA
The IN74ACT643 is identical in pinout to the LS/ALS643,
The IN74ACT643 is a 3-state transceiver that is used for 2-way
LOGIC DIAGRAM
PIN 10 = GND
PIN 20=V
CC
X = don’t care
Output
Enable
L
L
H
Control Inputs
FUNCTION TABLE
T
ORDERING INFORMATION
A
Direction
= -40° to 85° C for all packages
PIN ASSIGNMENT
IN74ACT643DW SOIC
H
X
IN74ACT643N Plastic
L
TECHNICAL DATA
IN74ACT643
Data Transmitted
from Bus B to
Bus A
Data Transmitted
from Bus A to
Bus B (inverted)
Buses Isolated
(High Impedance
State)
Operation
Rev. 00

Related parts for 74act643

74act643 Summary of contents

Page 1

... HC/HCT643. The IN74ACT623 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The IN74ACT643 is a 3-state 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

... 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 IN74ACT643 Value Unit -0.5 to +7 ±20 mA ±50 mA ±50 ...

Page 3

... GND 5 2 (OE 5 GND GND OUT CC V =1.65 V Max 5.5 OLD V =3.85 V Min 5.5 OHD GND 5 IN74ACT643 Guaranteed Limits 25 °C Unit -40°C to 85°C 2.0 2.0 V 2.0 2.0 0.8 0.8 V 0.8 0.8 4.4 4.4 V 5.4 5.4 3.86 3.76 4.86 4.76 0.1 0.1 V 0.1 0.1 0.36 0.44 0.36 0.44 ±0.1 ±1.0 µA 1.5 mA ±0.6 ±6.0 µA ...

Page 4

... Maximum Input Capacitance IN C Maximum Tree-State I/O Capacitance OUT (Output in High-Impedance State0 C Power Dissipation Capacitance PD Figure 1. Switching Waveforms =5.0 V ± 10 °C Parameter Min 1.5 1.5 1.5 1.5 1.5 1.5 Typical @25°C,V Figure 2. Switching Waveforms IN74ACT643 =50pF,Input t =t =3.0 ns Guaranteed Limits Unit -40°C to 85°C Max Min Max 8.0 1.0 9.0 ns 8.0 1.0 9.0 ns 10.5 1.0 11 ...

Page 5

... EXPANDED LOGIC DIAGRAM IN74ACT643 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 IN74ACT643 Dimension, mm Symbol MIN MAX A 24.89 26.92 6.1 7. 5.33 D 0.36 0.56 1.14 1. 2.54 H 7.62 0° 10° 2.92 3. ...

Related keywords