View 74HCT1284_188180.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

INTEGRATED CIRCUITS
74HCT1284 Parallel printer interface transceiver/buffer
Product specification Supersedes data of 1995 Jun 27 IC06 Data Handbook 1998 Jul 10
Philips Semiconductors
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
FEATURES
* Asynchronous operation * 4-Bit transceivers * 3 additional buffer/driver lines * TTL compatible inputs * ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
DESCRIPTION
The 74HCT1284 parallel interface chip is designed to provide an asynchronous, 4-bit, bi-directional, parallel printer interface for personal computers. Three additional lines are included to provide handshaking signals between the host and the peripheral. The part is designed to match IEEE 1284 standard. The 4 transceiver pins (A/B 1-4) allow data transmission from the A bus to the B bus, or from the B bus to the A bus, depending on the state of the direction pin DIR. The B bus and the Y5-Y7 lines have totem pole or open drain style outputs depending on the state of the high drive enable pin HD. The A bus only has totem pole style outputs. All inputs are TTL compatible with at least 400mV of input hysteresis at VCC = 5.0V.
* Input Hysteresis * Low Noise Operation * Center Pin VCC & GND * IEEE 1284 Compliant Level 1 & 2 * Overvoltage Protection on B side
QUICK REFERENCE DATA
SYMBOL tPLH tPHL CIN COUT ICC PARAMETER Propagation delay Bn to An Input capacitance An, DIR, HD Output capacitance Bn, Yn Total supply current
CONDITIONS Tamb = 25C; GND = 0V CL = 50pF; VCC = 5V VI = 0V or VCC VO = 0V or VCC; 3-State VCC = 5.5V
TYPICAL 5.3 5.6 5 14 500
UNIT ns ns pF pF nA
ORDERING INFORMATION
PACKAGES 20-pin plastic DIP 20-pin plastic SOL 20-pin plastic SSOP Type II 20-pin plastic TSSOP Type I TEMPERATURE RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C ORDER CODE 74HCT1284N 7HCT1284D 74HCT1284DB 74HCT1284PW DRAWING NUMBER SOT146-1 SOT163-1 SOT339-1 SOT360-1
PIN CONFIGURATION
A1 1 A2 A3 A4 GND GND A5 A6 A7 2 3 4 5 6 7 8 9 20 B1 19 B2 18 B3 17 B4 16 VCC 15 VCC 14 Y5 13 Y6 12 Y7 11 HD
PIN DESCRIPTION
PIN NUMBER 1,2,3,4 20,19,18,17 7,8,9 14,13,12 10,11 5,6 15,16 SYMBOL A1 - A4 B1 - B4 A5 - A7 Y5 - Y7 DIR,HIGH DRIVE GND VCC FUNCTION Data inputs/outputs Buffer/Driver lines Direction, Drive Ground (0V) Positive supply voltage
DIR 10
SK00001
1998 Jul 10
2
853-1768 19693
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
LOGIC SYMBOL
A1 A B B1
FUNCTION TABLE
INPUTS DIR L
B2
OUTPUTS A5-7 L H L H L H L H Y5-7 L Z L H L Z L H
INPUTS/OUTPUTS A1-4 A=B A=B A=B A=B Inputs Low Inputs High Inputs Inputs B1-4 Inputs Inputs Inputs Inputs Outputs Low Outputs Z B=A B=A
HD L L H H L L H H
A2
A
B
L
A3 A B B3
L L
A4
A
B
B4
H H
A5 A6 A7 DIR
A A A
Y Y Y
Y5 Y6 Y7 HD
H H
H = High Voltage L = Low Voltage Z = High Impedance, Off-State
SK00009
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL VCC IIK VI IOK VOUT IOUT Tstg ICC/IGND DC supply voltage DC input diode current DC input voltage3 VO < 0 Output in Off or High state Output in Low state VI < 0 PARAMETER CONDITIONS RATING -0.5 to +6.5 20 -2 to +7.0 50 -0.5 to +5.5 50 -65 to 150 200 UNIT V mA V mA V mA C mA
DC output diode current DC output voltage3
DC output current Storage temperature range Continuous current through VCC or GND
NOTES: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150C. 3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VI VIH VIL IOH IOL Tamb DC supply voltage Input voltage High-level input voltage Low-level Input voltage High-level output current Low-level output current Operating free-air temperature range 0 PARAMETER MIN 4.7 0 2.0 0.8 -14 14 +70 MAX 5.5 VCC V V V V mA mA C UNIT
1998 Jul 10
3
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
DC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITIONS MIN High-level out ut output voltage An Bn or Yn An Bn or Yn VHYS RD II IOFF IOZH IOZL IIH+IOZH IIL+IOZL ICC Input Hysteresis B/Y side Output Impedance Input leakage current (A5-A7) B/Y Side Power-off leakage current 3-State output High current Yn 3-State output Low current Yn current (A1 - A4, Bn) current (A1 - A4, Bn) VCC = Min to Max; IOH = -50A VCC = 4.7V; IOH = -4mA VCC = 4.7V; IOH = -14mA VCC = Min to Max; IOL = 50A; VI = VIL or VIH VCC = 4.7V; IOL = 4mA; VI = VIL or VIH VCC = 4.7V; IOL = 14mA; VI = VIL or VIH VCC = 5.0V See Figure 1 VCC = 5.5V; VO = VCC or GND VCC = 0.0V; VO = 0 to 7V VCC = 5.5V; VO = VCC; VI = VIL or VIH VCC = 5.5V; VO = GND; VI = VIL or VIH VCC = 5.5V; VI/O = VCC VCC = 5.5V; VI/O = GND VCC = 5.5V; IO = 0; VI = GND or VCC 0.4 8 VCC-0.2 4.3 2.6 Tamb = 25C TYP VCC 4.6 2.9 0 0.1 0.15 0.50 15 0.5 1 1 -1 1 -1 0.5 22 1.0 10 5 -5 5 -5 250 0.2 0.25 0.3 0.4 8 22 5.0 100 20 -20 25 -25 400 MAX Tamb = 0C to +70C MIN VCC-0.2 3.7 2.4 0.2 0.4 0.4 MAX V V V V V V V A A A A A A A UNIT
VOH
VOL
Low-level output voltage
Quiescent Supply Current
1998 Jul 10
4
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
AC CHARACTERISTICS
GND = 0V, tR = tF = 3.0ns, CL = 50pF, RL = 500 LIMITS SYMBOL PARAMETER WAVEFORM MIN SR tPLH tPHL tPLH tPHL tPZH tPHZ tPZL tPLZ B-Side Slew Rate Propagation delay A toY or A to B Propagation delay B to A Output enable/disable time to/from High level HD to Y or HD to B Output enable/disable time to/from Low level A to Y or A to B 2 1 3 4 0.05 5.0 5.0 1.5 1.5 4.0 2.0 5.0 1.5 Tamb = 25C VCC = 5.0V TYP 0.11 13.9 21.0 5.3 5.6 12.0 6.5 12.7 5.0 MAX 0.4 17.1 25.7 7.5 7.9 16.0 9.1 16.3 7.1 Tamb = 0 to + 70C VCC = Min to Max MIN 0.05 5.0 5.0 1.5 1.5 4.0 2.0 5.0 1.5 MAX 0.4 22 31 9.0 10.0 20.0 11.0 20.0 9.0 V/ns ns ns ns ns UNIT
AC WAVEFORMS
For all waveforms, VM = 1.5V.
Bn Input
VM
VM
An Input tPHL VOH
VM
VM
tPLH
tPLH
tPHL VOH
A1 - A4 Output
50% VCC
50% VCC VOL
Bn or Yn Output
VOH-1.4V
VOH-1.4V VOL
SK00003
SK00004
Waveform 1. Propagation Delay for Bn to A1-A4
Waveform 2. Propagation Delay for An to Bn or Yn Outputs
HD Inputs
VM tPZH
VM tPHZ VOH
An Input
VM
VM
tPZL
tPLZ
Bn or Yn Output
VM
VOH-0.3V 0V
Bn or Yn Output
VM
VOL +0.3V VOL
SK00005
SK00006
Waveform 3. 3-State Output Enable Time to High Level and Output Disable Time from High Level
Waveform 4. 3-State Output enable Time to Low Level and Output disable Time from Low Level
1998 Jul 10
5
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
TEST CIRCUITS AND WAVEFORM
VCC
IO D.U.T VOH/2
VOH is the voltage when 10A is drawn from the high output. IO is measured by forcing VOH/2 on the output. RD can then be calculated using the equation RD = |VOH/2IO| .
SK00007
Figure 1. Output Impedance RD
VCC
SWITCH POSITION Bn or Yn Outputs TEST SWITCH GND VCC GND GND VCC VCC
VOUT VCC S1 GND 62W
VIN PULSE GENERATOR RT
D.U.T 35W
50pF
tPLH tPHL tPZH tPHZ tPZL tPLZ
Test Circuit for Bn or Yn Outputs
VCC 90% NEGATIVE PULSE VM 10% tTHL (tf) RT CL RL tTLH (tr) 90% 90% VM 10% tW 0V POSITIVE PULSE 10% tTHL (tf) AMP (V) 10% 0V tTLH (tr) tW VM 90% AMP (V)
VIN PULSE GENERATOR D.U.T
VOUT
Test Circuit for An Outputs
VM
VM = 1.5V Input Pulse Definition
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. RT = Termination resistance should be equal to ZOUT of pulse generators. FAMILY Amplitude 74HCT 3.0V Rep. Rate 1MHz tW 500ns tr 3ns tf 3ns
SK00008
INPUT PULSE REQUIREMENTS
1998 Jul 10
6
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
1998 Jul 10
7
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1998 Jul 10
8
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
1998 Jul 10
9
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
1998 Jul 10
10
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
NOTES
1998 Jul 10
11
Philips Semiconductors
Product specification
Parallel printer interface transceiver/buffer
74HCT1284
Data sheet status
Data sheet status Objective specification Preliminary specification Product specification Product status Development Qualification Definition [1] This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
Production
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. Date of release: 07-99 Document order number: 9397 750 06245
Philips Semiconductors
1998 Jul 10 12

▲Up To Search▲

Price & Availability of 74HCT1284

	To Download 74HCT1284 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .