DM74ALS245ASJ

DM74ALS245ASJ Datasheet


DM74ALS245A Octal 3-STATE Bus Transceiver

Part Datasheet
DM74ALS245ASJ DM74ALS245ASJ DM74ALS245ASJ (pdf)
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DM74ALS245A Octal 3-STATE Bus Transceiver

DM74ALS245A Octal 3-STATE Bus Transceiver

This advanced low power Schottky device contains 8 pairs of 3-STATE logic elements configured as octal bus transceivers. These circuits are designed for use in memory, microprocessor systems and in asynchronous bidirectional data buses. Two way communication between buses is controlled by the DIR input. Data transmits either from the A bus to the B bus or from the B bus to the A bus. Both the driver and receiver outputs can be disabled via the G enable input which causes outputs to enter the high impedance mode so that the buses are effectively isolated.
s Advanced oxide-isolated, ion-implanted Schottky TTL process
s Non-inverting logic output s Glitch free bus during power up and down s 3-STATE outputs independently controlled on A and B
buses s Low output impedance to drive terminated transmission
lines to s Switching response specified into pF s Specified to interface with CMOS at VOH = VCC − 2V s PNP inputs to reduce input loading s Switching specifications guaranteed over full tempera-
ture and VCC range
Ordering Code:

Order Number Package Number

Package Description

DM74ALS245AWM

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide

DM74ALS245ASJ

M20D
20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide

DM74ALS245AMSA

MSA20
20-Lead Shrink Small Outline Package SSOP , EIAJ TYPE II, 5.3mm Wide

DM74ALS245AN

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Function Table

Control

Inputs

H = HIGH Logic Level L = LOW Logic Level

X = Either HIGH or LOW Logic Level

Operation

B Data to A Bus A Data to B Bus

Hi-Z
2000 Fairchild Semiconductor Corporation DS006213

DM74ALS245A

Absolute Maximum Ratings Note 1

Supply Voltage Input Voltage

Control Inputs I/O Ports Operating Free Air Temperature Range Storage Temperature Range Typical N Package M Package
7V 5.5V 0°C to +70°C −65°C to +150°C
53.0°C/W 72.0°C/W

Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.

Recommended Operating Conditions

VCC VIH VIL IOH IOL TA

Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Operating Free Air Temperature
−15

Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.

Parameter

Conditions

Input Clamp Voltage

VCC = 4.5V, IIN = −18 mA

HIGH Level

VCC = 4.5V, IOH = −3 mA

Output Voltage

VCC = 4.5V, IOH = Max

IOH = mA, VCC = 4.5V to 5.5V

VCC − 2

LOW Level Output Voltage

VCC = 4.5V

IOL = 24 mA

Input Current at Maximum

VCC = 5.5V

VIN = 7V

Control Inputs
More datasheets: HMC626LP5E | 117355-HMC626LP5 | B2000T | B0500T | B1250T | DM74ALS245AWMX | DM74ALS245AWM | DM74ALS245AN | DM74ALS245ASJX | DM74ALS245AMSA


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Datasheet ID: DM74ALS245ASJ 513669