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Número de pieza | HD74HC245 | |
Descripción | Octal Bus Transceivers | |
Fabricantes | Renesas | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de HD74HC245 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
No Preview Available ! HD74HC245
Octal Bus Transceivers (with 3-state outputs)
REJ03D0598–0200
(Previous ADE-205-475)
Rev.2.00
Jan 31, 2006
Description
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 low, data flows from the B inputs to the A outputs. The HD74HC245
transfers true data from one bus to the other. This device does not have schmitt trigger inputs.
Features
• High Speed Operation: tpd = 8 ns typ (CL = 50 pF)
• High Output Current: Fanout of 15 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC245P
DILP-20 pin
PRDP0020AC-B
(DP-20NEV)
P
HD74HC245FPEL SOP-20 pin (JEITA)
PRSP0020DD-B
(FP-20DAV)
FP
HD74HC245RPEL SOP-20 pin (JEDEC)
PRSP0020DC-A RP
(FP-20DBV)
HD74HC245TELL TSSOP-20 pin
PTSP0020JB-A
(TTP-20DAV)
T
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
EL (1,000 pcs/reel)
ELL (2,000 pcs/reel)
Function Table
Enable G
L
L
H
H : high level
L : low level
X : irrelevant
Direction Control DIR
L
H
X
Operation
B data to A bus
A data to B bus
Isolation
Rev.2.00 Jan 31, 2006 page 1 of 7
1 page HD74HC245
Waveforms
• Waveform – 1
Input A
Output Y
tr
10 %
90 %
50 %
tPLH
tf
90 %
50 %
10 %
tPHL
50 %
10 %
90 %
90 %
50 %
10 %
tTLH
tTHL
VCC
0V
VOH
VOL
• Waveform – 2
tf
90 %
Input G
50 %
10 %
tZL
tr
10 %
90 %
50 %
tLZ
Waveform – A
Waveform – B
50 %
tZH
50 %
10 %
tHZ
90 %
VCC
0V
VOH
VOL
VOH
VOL
Notes : 1. Input waveform : PRR ≤ 1 MHz, duty cycle 50%, tr ≤ 6 ns, tf ≤ 6 ns
2. Waveform– A is for an output with internal conditions such that the
output is low except when disabled by the output control.
3. Waveform– B is for an output with internal conditions such that the
output is high except when disabled by the output control.
4. The output are measured one at a time with one transition per measurement.
Rev.2.00 Jan 31, 2006 page 5 of 7
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet HD74HC245.PDF ] |
Número de pieza | Descripción | Fabricantes |
HD74HC240 | Octal Buffers/Line Drivers/Line Receivers(with inverted 3-state outputs) | Hitachi Semiconductor |
HD74HC240 | Octal Buffers/Line Drivers/Line Receivers | Renesas |
HD74HC241 | Octal Buffers/Line Drivers/Line Receivers(with noninverted 3-state outputs) | Hitachi Semiconductor |
HD74HC242 | Quad. Bus Transceivers (with 3-state outputs)/Quad. Bus Transceivers (with noninverted 3-state outputs) | Hitachi Semiconductor |
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