IC BUS TRANSCVR 3ST 8BIT 20DIP

CD74HC245E

Manufacturer Part NumberCD74HC245E
DescriptionIC BUS TRANSCVR 3ST 8BIT 20DIP
ManufacturerTexas Instruments
Series74HC
CD74HC245E datasheet
 


Specifications of CD74HC245E

Logic TypeTransceiver, Non-InvertingNumber Of Elements1
Number Of Bits Per Element8Current - Output High, Low5.2mA, 5.2mA
Voltage - Supply2 V ~ 6 VOperating Temperature-55°C ~ 125°C
Mounting TypeThrough HolePackage / Case20-DIP (0.300", 7.62mm)
Logic Family74HCNumber Of Channels Per Chip8
Input LevelCMOSOutput LevelCMOS
Output Type3-StateHigh Level Output Current- 5.2 mA
Low Level Output Current5.2 mAPropagation Delay Time110 ns
Supply Voltage (max)6 VSupply Voltage (min)2 V
Maximum Operating Temperature+ 125 CFunctionTri-St. Octal Bus
Input Bias Current (max)8 uAMinimum Operating Temperature- 55 C
Mounting StyleThrough HoleNumber Of Circuits8
PolarityNon-InvertingLogic Device TypeTransceiver, Non Inverting
Supply Voltage Range2V To 6VLogic Case StyleDIP
No. Of Pins20Operating Temperature Range-55°C To +125°C
Family TypeHCRohs CompliantYes
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names296-12800-5
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Data sheet acquired from Harris Semiconductor
SCHS119A
November 1997 - Revised May 2003
Features
• Buffered Inputs
• Three-State Outputs
• Bus Line Driving Capability
• Typical Propagation Delay (A to B, B to A) 9ns at V
o
= 5V, C
= 15pF, T
= 25
C
L
A
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
= 30%, N
IL
at V
= 5V
CC
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
= 0.8V (Max), V
= 2V (Min)
IL
IH
- CMOS Input Compatibility, I
l
Pinout
CD54HC245, CD54HCT245
(CERDIP)
CD74HC245, CD74HCT245
(PDIP, SOIC)
TOP VIEW
DIR
1
A0
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
GND
10
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
©
Copyright
2003, Texas Instruments Incorporated
CD54HC245, CD74HC245,
CD54HCT245, CD74HCT245
High-Speed CMOS Logic Octal-Bus Transceiver,
Description
The
CD54HC245,
CD74HCT245 are high-speed octal three-state bidirectional
transceivers
communication between data buses. They have high drive
current outputs which enable high-speed operation while
CC
driving large bus capacitances. They provide the low power
consumption of standard CMOS circuits with speeds and
drive capabilities comparable to that of LSTTL circuits.
The
CD54HC245,
CD74HCT245 allow data transmission of the B bus or from
the B bus to the A bus. The logic level at the direction input
o
o
C to 125
C
(DIR) determines the direction. The output enable input
(OE), when high, puts the I/O ports in the high-impedance
state.
The HC/HCT245 is similar in operation to the HC/HCT640
and the HC/HCT643.
Ordering Information
= 30% of V
IH
CC
PART NUMBER
CD54HC245F3A
CD54HCT245F3A
CD74HC245E
1 A at V
, V
OL
OH
CD74HC245M
CD74HC245M96
CD74HCT245E
CD74HCT245M
CD74HCT245M96
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel.
20
V
CC
OE
19
B0
18
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
1
Three-State, Non-Inverting
CD54HCT245,
and
CD74HC245,
intended
for
two-way
asynchronous
CD54HCT245,
CD74HC245
TEMP.
o
RANGE (
C)
PACKAGE
-55 to 125
20 Ld CERDIP
-55 to 125
20 Ld CERDIP
-55 to 125
20 Ld PDIP
-55 to 125
20 Ld SOIC
-55 to 125
20 Ld SOIC
-55 to 125
20 Ld PDIP
-55 to 125
20 Ld SOIC
-55 to 125
20 Ld SOIC
and

CD74HC245E Summary of contents

  • Page 1

    ... I/O ports in the high-impedance state. The HC/HCT245 is similar in operation to the HC/HCT640 and the HC/HCT643. Ordering Information = 30 PART NUMBER CD54HC245F3A CD54HCT245F3A CD74HC245E CD74HC245M CD74HC245M96 CD74HCT245E CD74HCT245M CD74HCT245M96 NOTE: When ordering, use the entire part number. The suffix 96 denotes tape and reel ...

  • Page 2

    CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 Functional Diagram TRUTH TABLE CONTROL INPUTS OE DIR OPERATION Data to A Bus Data to B Bus High Level Low ...

  • Page 3

    CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 Absolute Maximum Ratings DC Supply Voltage -0.5V ...

  • Page 4

    CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 DC Electrical Specifications (Continued) CONDITIONS PARAMETER SYMBOL V (V) I Three-State Leakage Current HCT TYPES High Level Input Voltage Low Level Input V ...

  • Page 5

    CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 Switching Specifications C = 50pF, Input t L PARAMETER SYMBOL HC TYPES Propagation Delay PHL PLH Data to Output Output Disable to Output t t PHL, PLH Output Enable ...

  • Page 6

    CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 Test Circuits and Waveforms t = 6ns r 90% INPUT 50% 10% t THL INVERTING OUTPUT t t PLH PHL FIGURE 1. HC TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC 6ns ...

  • Page 7

    ... PACKAGING INFORMATION (1) Orderable Device Status CD54HC245F ACTIVE CD54HC245F3A ACTIVE CD54HCT245F ACTIVE CD54HCT245F3A ACTIVE CD74HC245E ACTIVE CD74HC245EE4 ACTIVE CD74HC245M ACTIVE CD74HC245M96 ACTIVE CD74HC245M96E4 ACTIVE CD74HC245M96G4 ACTIVE CD74HC245ME4 ACTIVE CD74HC245MG4 ACTIVE CD74HCT245E ACTIVE CD74HCT245EE4 ACTIVE CD74HCT245M ACTIVE CD74HCT245M96 ACTIVE CD74HCT245M96E4 ACTIVE CD74HCT245M96G4 ...

  • Page 8

    Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free ...

  • Page 9

    TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing CD74HC245M96 SOIC DW CD74HCT245M96 SOIC DW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 20 2000 330.0 24.4 10.8 20 ...

  • Page 10

    Device Package Type CD74HC245M96 SOIC CD74HCT245M96 SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2000 DW 20 2000 Pack Materials-Page 2 11-Mar-2008 Width (mm) Height (mm) 346.0 346.0 41.0 346.0 346.0 ...

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  • Page 15

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...