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74ACT1284SC 데이터시트 PDF




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부품번호 74ACT1284SC 기능
기능 IEEE 1284 Transceiver
제조업체 Fairchild Semiconductor
로고 Fairchild Semiconductor 로고


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74ACT1284SC 데이터시트, 핀배열, 회로
www.DataSheet4U.com
June 1996
Revised November 2000
74ACT1284
IEEE 1284 Transceiver
General Description
The 74ACT1284 contains four non-inverting bidirectional
buffers and three non-inverting buffers with open Drain out-
puts and high drive capability on the B Ports. It is intended
to provide a standard signaling method for a bi-direction
parallel peripheral in an Extended Capabilities Port mode
(ECP).
The HD (active HIGH) input pin enables the B Ports to
switch from open Drain to a high drive totem pole output,
capable of sourcing 14 mA on all seven buffers. The DIR
input determines the direction of data flow on the bidirec-
tional buffers. DIR (active HIGH) enables data flow from
A Ports to B Ports. DIR (active LOW) enables data flow
from B Ports to A Ports.
Features
s TTL-compatible inputs
s A Ports have standard 4 mA totem pole outputs
s Typical input hysteresis of 0.5V
s B Port high drive source/sink capability of 14 mA
s Bidirectional non-inverting buffers
s Supports IEEE P1284 Level 1 and Level 2 signaling
standards for bidirectional parallel communications
between personal computers and printing peripherals
s B Port outputs in High Impedance mode during power
down
s Guaranteed 4000V minimum ESD protection
Ordering Code:
Order Number Package Number
Package Description
74ACT1284SC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ACT1284MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74ACT1284MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
HD
DIR
A1 - A4
B1 - B4
A5 - A7
B5 - B7
Description
High Drive Enable input (Active HIGH)
Direction Control Input
Side A Inputs or Outputs
Side B Inputs or Outputs
Side A Inputs
Side B Outputs
FACTis a trademark of Fairchild Semiconductor Corporation.
© 2000 Fairchild Semiconductor Corporation DS011683
www.fairchildsemi.com




74ACT1284SC pdf, 반도체, 판매, 대치품
AC Electrical Characteristics
TA = +25°C
TA = 0°C to +70°C
Symbol
Parameter
VCC = 4.7V 5.5V
VCC = 4.7V 5.5V
Min Max Min Max
tPHL
A1- A7 to B1 - B7
tPLH
A1- A7 to B1 - B7
tPHL
B1 - B4 to A1 - A4
tPLH
B1 - B4 to A1 - A4
tpEnable
Output Enable Time
HD to B1 - B7
tpDisable
Output Disable Time
HD to B1 - B7
tSKEW
Output Slew Rate
tPLH
B1 - B7
tPHL
tr, tf tRISE and tFALL
B1 - B7 (Note 7)
Note 7: Open Drain
2.0 20.0 2.0 20.0
2.0 20.0 2.0 20.0
2.0 20.0 2.0 20.0
2.0 20.0 2.0 20.0
2.0 20.0 2.0 20.0
2.0 20.0 2.0 20.0
0.05 0.40 0.05 0.40
120 120
Note 8: This parameter is guaranteed but not tested, characterized only.
Note: Pulse Generator for all pulses; Rate 1.0 MHz; AO 50; tf 2.5 ns, tr 2.5 ns.
TA = −40°C to +85°C
VCC = 4.7V 5.5V
Min Max
2.0 24.0
2.0 24.0
2.0 24.0
2.0 24.0
2.0 24.0
2.0 24.0
0.05 0.40
120
Units
Figure
Number
ns Figure 1
ns Figure 2
ns Figure 3
ns Figure 3
ns Figure 2
ns Figure 2
V/ns
Figures
1, 2
Figure 4
ns
(Note 8)
Capacitance
Symbol
CIN
CI/O
Parameter
Input Capacitance
I/O Pin Capacitance
Typ
4.0
12.0
Units
pF
pF
Conditions
VCC = OPEN (HD, DIR A5 - A7)
VCC = 5.0V
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74ACT1284SC 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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부품번호상세설명 및 기능제조사
74ACT1284SC

IEEE 1284 Transceiver

Fairchild Semiconductor
Fairchild Semiconductor

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