View IN74ACT245DW_4363958.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

TECHNICAL DATA
IN74ACT245
Octal 3-State Noninverting Bus Transceiver
High-Speed Silicon-Gate CMOS
The IN74ACT245 is identical in pinout to the LS/ALS245, HC/HCT245. The IN74ACT245 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The IN74ACT245 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. 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 A; 0.1 A @ 25C * Outputs Source/Sink 24 mA
ORDERING INFORMATION IN74ACT245N Plastic IN74ACT245DW SOIC TA = -40 to 85 C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs Output Enable L Direction L Operation Data Transmitted from Bus B to Bus A Data Transmitted from Bus A to Bus B Buses Isolated (High Impedance State)
PIN 20=VCC PIN 10 = GND
L
H
H
X
X = don't care
Rev. 00
IN74ACT245
MAXIMUM RATINGS*
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL
*
Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package)
Value -0.5 to +7.0 -0.5 to VCC +0.5 -0.5 to VCC +0.5 20 50 50 750 500 -65 to +150 260
Unit V V V mA mA mA mW C C
Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/C from 65 to 125C SOIC Package: : - 7 mW/C from 65 to 125C
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VIN, VOUT TJ TA IOH IOL tr, tf
*
Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Junction Temperature (PDIP) Operating Temperature, All Package Types Output Current - High Output Current - Low Input Rise and Fall Time (except Schmitt Inputs)
*
Min 4.5 0 -40
Max 5.5 VCC 140 +85 -24 24
Unit V V C C mA mA ns/V
VCC =4.5 V VCC =5.5 V
0 0
10 8.0
VIN from 0.8 V to 2.0 V
This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND(VIN or VOUT)VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open.
Rev. 00
IN74ACT245
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
VCC Symbol VIH VIL VOH Parameter Minimum HighLevel Input Voltage Maximum Low Level Input Voltage Minimum HighLevel Output Voltage Test Conditions VOUT=0.1 V or VCC-0.1 V VOUT=0.1 V or VCC-0.1 V IOUT -50 A VIN=VIH or VIL IOH=-24 mA IOH=-24 mA VOL Maximum LowLevel Output Voltage IOUT 50 A
* *
Guaranteed Limits 25 C 2.0 2.0 0.8 0.8 4.4 5.4 3.86 4.86 0.1 0.1 0.36 0.36 0.1 -40C to 85C 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 1.0 1.5 0.6 6.0 A mA A V Unit V V V
V 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 5.5 5.5 5.5
VIN=VIH or VIL IOL=24 mA IOL=24 mA VIN=VCC or GND VIN=VCC - 2.1 V
IIN ICCT IOZ
Maximum Input Leakage Current Additional Max. ICC/Input Maximum ThreeState Leakage Current +Minimum Dynamic Output Current +Minimum Dynamic Output Current Maximum Quiescent Supply Current (per Package)
VIN (OE)= VIH or VIL VIN =VCC or GND VOUT =VCC or GND VOLD=1.65 V Max VOHD=3.85 V Min VIN=VCC or GND
IOLD IOHD ICC
5.5 5.5 5.5 8.0
75 -75 80
mA mA A
*
All outputs loaded; thresholds on input associated with output under test. +Maximum test duration 2.0 ms, one output loaded at a time.
Rev. 00
IN74ACT245
AC ELECTRICAL CHARACTERISTICS (VCC=5.0 V 10%, CL=50pF, Input tr=tf=3.0 ns)
Guaranteed Limits Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ CIN COUT Parameter Propagation Delay, A to B, B to A (Figure 1) Propagation Delay, A to B, B to A (Figure 1) Propagation Delay, Direction or Output Enable to A or B (Figure 2) Propagation Delay, Direction or Output Enable to A or B (Figure 2) Propagation Delay, Direction or Output Enable to A or B (Figure 2) Propagation Delay, Direction or Output Enable to A or B (Figure 2) Maximum Input Capacitance Maximum Three-State I/O Capacitance (I/O in High-Impedance State) 25 C Min 1.5 1.5 1.5 1.5 1.5 2.0 4.5 15 Max 7.5 8.0 10.0 10.0 10.0 10.0 -40C to 85C Min 1.5 1.0 1.5 1.5 1.0 1.5 4.5 15 Max 8.0 9.0 11.0 12.0 11.0 11.0 ns ns ns ns ns ns pF pF Unit
Typical @25C,VCC=5.0 V CPD Power Dissipation Capacitance 45 pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Rev. 00
IN74ACT245
EXPANDED LOGIC DIAGRAM
Rev. 00
IN74ACT245
N SUFFIX PLASTIC DIP (MS - 001AD)
A
Dimension, mm
20 11 B 1 10
Symbol A B C
MIN 24.89 6.1
MAX 26.92 7.11 5.33
F
L
D F
0.36 1.14 2.54 7.62 0 2.92 7.62 0.2 0.38
0.56 1.78
C -T- SEATING
PLANE
G H
H J
N G D 0.25 (0.010) M T K M
J K L M N
10 3.81 8.26 0.36
NOTES:
1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side.
D SUFFIX SOIC (MS - 013AC)
A 20 11
Dimension, mm Symbol MIN 12.6 7.4 2.35 0.33 0.4 1.27 9.53 0 0.1 0.23 10 0.25 8 0.3 0.32 10.65 0.75 MAX 13 7.6 2.65 0.51 1.27
H
B
P
A B
1
G
10 C R x 45
C D F
-TD 0.25 (0.010) M T C M K
SEATING PLANE
J
F
M
G H J K M P R
NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B 0.25 mm (0.010) per side.
Rev. 00

▲Up To Search▲

Price & Availability of IN74ACT245DW

	To Download IN74ACT245DW Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .