|
|
Numéro de référence | HD74BC640A | ||
Description | Octal Bus Transceivers With 3 State Outputs | ||
Fabricant | Hitachi Semiconductor | ||
Logo | |||
HD74BC640A
Octal Bus Transceivers With 3 State Outputs
ADE-205-026 (Z)
Rev.0
June 1993
Description
The HD74BC640A provides high drivability and operation equal to or better than high speed bipolar
standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5
of high speed bipolar logic IC. When the frequency is 10 MHz. The device has eight bus transceivers with
three state outputs in a 20 pin package. Each device has an active low enable input (G) and a direction
control input, DiR. When DiR is high, data flows from the A inputs to the B outputs. When DiR is high,
data flows from the B inputs to the A outputs. When enable inputs (G) is high, disables both A and B ports
by placing then in a high impedance.
Features
• Input/Output are at high impedance state when power supply is off.
• Input pins can be open, when not used, owing to built in input pull up circuit.
• Input is TTL level.
• Wide operating temperature range
Ta = –40 to +85°C.
Function Table
Control Inputs
G
L
L
H
H : High level
L : Low level
X : Immaterial
DIR
L
H
X
Operation
B data to A bus
A data to B bus
Isolation
|
|||
Pages | Pages 9 | ||
Télécharger | [ HD74BC640A ] |
No | Description détaillée | Fabricant |
HD74BC640A | Octal Bus Transceivers With 3 State Outputs | Hitachi Semiconductor |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
www.DataSheetWiki.com | 2020 | Contactez-nous | Recherche |