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INTEGRATED CIRCUITS
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1 Transceivers
Product specification IC05 Data Handbook 1991 Feb 08
Philips Semiconductors
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
74ALS620A/74ALS620A-1 Octal bus transceiver, inverting (3-State) 74ALS623A/74ALS623A-1 Octal bus transceiver, non-inverting (3-State)
FEATURES
* Octal bidirectional bus interface * 3-State buffer outputs sink 24mA and source 15mA * The -1 version sinks 48mA IOL within the +5% VCC range
TYPE 74ALS620A/620A-1 74ALS623A/623A-1 TYPICAL PROPAGATION DELAY 4.0ns 4.0ns TYPICAL SUPPLY CURRENT (TOTAL) 33mA 38mA
DESCRIPTION
The 74ALS620A and 74ALS623A are octal transceiver featuring 3-State bus compatible outputs in both transmit and receive directions. The 74ALS620A is an inverting version of the 74ALS623A. The outputs are capable of sinking 24mA and sourcing up to 15mA, providing very good capacitive drive characteristics. The outputs for the 74ALS620A-1 and 74ALS623A are capable of sinking up to 48mA when within the 5% VCC range. These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control function implementation allows for maximum flexibility in timing. These devices allow data transmission from the A bus to the B bus or from B bus to A bus, depending on the logic levels at the enable inputs (OEBA and OEAB). The enable inputs can be used to disable the device so that the buses are effectively isolated. The dual-enable configuration gives the 74ALS620A and 74ALS623A the capability to store data by the simultaneous enabling of OEBA and OEAB. Each output reinforces its input in this transceiver configuration. Thus when both control inputs are enabled and all other data sources to the two sets of the bus lines are at high impedance, both sets of the bus lines (16 in all) will remain at their last states.
ORDERING INFORMATION
ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C 74ALS620AN, 74ALS620A-1N 74ALS623AN, 74ALS623A-1N 74ALS620AD, 74ALS620A-1D 74ALS623AD, 74ALS623A-1D DRAWING NUMBER
20-pin plastic DIP 20-pin plastic SOL
SOT146-1 SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS A0 - A7, B0 - B7 OEBA, OEAB A0 - A7, B0 - B7 A0 - A7, B0 - B7 Data inputs Output Enable inputs Data outputs Data outputs (-1 version) DESCRIPTION 74ALS (U.L.) HIGH/LOW 1.0/1.0 1.0/1.0 750/240 750/480 LOAD VALUE HIGH/LOW 20A/0.1mA 20A/0.1mA 15mA/24mA 15mA/48mA
NOTE: One (1.0) ALS unit load is defined as: 20A in the High state and 0.1mA in the Low state.
PIN CONFIGURATION - 74ALS620A/74ALS620A-1
OEAB A0 A1 A2 A3 A4 A5 A6 A7 1 2 3 4 5 6 7 8 9 20 VCC 19 OEBA 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7
PIN CONFIGURATION - 74ALS623A/74ALS623A-1
OEAB A0 A1 A2 A3 A4 A5 A6 A7 1 2 3 4 5 6 7 8 9 20 VCC 19 OEBA 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7
GND 10
GND 10
SC00101
SC00102
1991 Feb 08
2
853-0020 01670
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
LOGIC SYMBOL - 74ALS620A/74ALS620A-1
2 3 4 5 6 7 8 9
LOGIC SYMBOL - 74ALS623A/74ALS623A-1
2 3 4 5 6 7 8 9
A0 1 19 OEAB OEBA B0
A1
A2
A3
A4
A5
A6
A7 1 19
A0 OEAB OEBA B0
A1
A2
A3
A4
A5
A6
A7
B1
B2
B3
B4
B5
B6
B7
B1
B2
B3
B4
B5
B6
B7
18 VCC = Pin 20 GND = Pin 10
17
16
15
14
13
12
11
18
17
16
15
14
13
12
11
SC00103
VCC = Pin 20 GND = Pin 10
SC00104
IEC/IEEE SYMBOL - 74ALS620A/74ALS620A-1
1 19
IEC/IEEE SYMBOL - 74ALS623A/74ALS623A-1
1 19
EN1 EN2
EN1 EN2
2
1 2
18
2
1 2
18
3 4 5 6 7 8 9
17 16 15 14 13 12 11
3 4 5 6 7 8 9
17 16 15 14 13 12 11
SC00105
SC00106
1991 Feb 08
3
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
LOGIC DIAGRAM - 74ALS620A/74ALS620A-1
OEBA OEAB 19 1
LOGIC DIAGRAM - 74ALS623A/74ALS623A-1
OEBA OEAB 19 1
A0
2
18
B0
A0
2
18
B0
A1
3
17
B1
A1
3
17
B1
A2
4
16
B2
A2
4
16
B2
A3
5
15
B3
A3
5
15
B3
A4
6
14
B4
A4
6
14
B4
A5
7
13
B5
A5
7
13
B5
A6
8
12
B6
A6
8
12
B6
A7 VCC = Pin 20 GND = Pin 10
9
11
B7 VCC = Pin 20 GND = Pin 10
A7
9
11
B7
SC00107
SC00108
FUNCTION TABLE
INPUTS OEBA L L H L L H L X Z = = = = High voltage level Low voltage level Don't care High impedance "off" state OEAB L H L H H 74ALS620A B data to A Bus A data to B Bus Z B data to A Bus A data to B Bus OPERATING MODES 74ALS623A B data to A Bus A data to B Bus Z B data to A Bus A data to B Bus
1991 Feb 08
4
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) SYMBOL VCC VIN IIN VOUT IO OUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state All versions Current applied to output in Low output state -1 version Operating free-air temperature range Storage temperature range 96 0 to +70 -65 to +150 mA C C PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to VCC 48 UNIT V V mA V mA
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VIH VIL IIK IOH IO OL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current All versions Low-level Low level output current -1 version Operating free-air temperature range 0 PARAMETER MIN 4.5 2.0 0.8 -18 -15 24 48 1 +70 LIMITS UNIT NOM 5.0 MAX 5.5 V V V mA mA mA mA C
NOTE: 1. The 48mA limit applies only under the condition of VCC = 5.0V 5%.
1991 Feb 08
5
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 MIN VCC = 10%, VIL = MAX, , , VIH = MIN VCC = MIN, VIL = MAX, VIH = MIN All versions VOL Low-level output voltage -1 versions VIK II IIH IIL IO Input clamp voltage Input current at maximum in ut input voltage High-level input current3 Low-level input current3 Output current4 ICCH S 74ALS620A 74ALS620A 1 74ALS620A-1 ICC Supply current (total) 74ALS623A 74ALS623A 1 74ALS623A-1 ICCL ICCZ ICCH ICCL ICCZ VCC = MAX VCC = MAX OEBA or OEAB A or B ports VCC = MIN, VIL = MAX, , , VIH = MIN VCC = 4.75V, VIL = MAX, VIH = MIN VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 5.5V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.4V VCC = MAX, VO = 2.25V -30 24 42 45 24 41 46 IOH = -0.4mA IOH = -3mA IOH = -15mA IOL = 12mA IOL = 24mA IOL = 48mA VCC - 2 2.4 2.0 0.25 0.35 0.35 -0.73 0.40 0.50 0.50 -1.5 0.1 0.1 20 -0.1 -112 34 49 52 43 50 55 3.2 LIMITS TYP2 UNIT MAX V V V V V V V mA mA A mA mA mA mA mA mA mA mA
VOH
High level output High-level out ut voltage
NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25C. 3. For I/O ports, the parameter IIH and IIL include the off-state current. 4. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
1991 Feb 08
6
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
AC ELECTRICAL CHARACTERISTICS FOR 74ALS620A/74ALS620A-1
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Propagation delay An to Bn, Bn to An Output enable time OEBA to An Output disable time OEBA to An Output enable time OEAB to Bn Output disable time OEAB to Bn Waveform 1 Waveform 3 Waveform 4 Waveform 3 Waveform 4 Waveform 3 Waveform 4 Waveform 3 Waveform 4 2.0 2.0 2.0 3.0 2.0 2.0 2.0 3.0 2.0 3.0 MAX 10.0 10.0 17.0 25.0 12.0 18.0 18.0 25.0 12.0 18.0 ns ns ns ns ns UNIT
AC ELECTRICAL CHARACTERISTICS FOR 74ALS623A/74ALS623A-1
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Propagation delay An to Bn, Bn to An Output enable time OEBA to An Output disable time OEBA to An Output enable time OEAB to Bn Output disable time OEAB to Bn Waveform 2 Waveform 3 Waveform 4 Waveform 3 Waveform 4 Waveform 3 Waveform 4 Waveform 3 Waveform 4 2.0 2.0 2.0 3.0 2.0 2.0 2.0 3.0 2.0 2.0 MAX 13.0 11.0 22.0 22.0 16.0 19.0 22.0 22.0 16.0 19.0 ns ns ns ns ns UNIT
1991 Feb 08
7
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
AC WAVEFORMS
For all waveforms, VM = 1.3V.
An, Bn
VM tPHL
VM tPLH
An, Bn
VM tPLH
VM tPHL
Bn, An
VM
VM
Bn, An
VM
VM
SF00773
SF00202
Waveform 1. Propagation Delay for Inverting Outputs
Waveform 2.
Propagation Delay for Non-inverting Outputs
OEBA VM OEAB tPZH An or Bn VM 0V tPHZ VOH -0.3V VM
OEBA VM OEAB tPZL An or Bn VM VOL +0.3V tPLZ VM
SF00412
SF00413
Waveform 3. 3-State Output Enable Time to High Level and Disable Time from High Level
Waveform 4. 3-State Output Enable Time to Low Level and Disable Time from Low Level
TEST CIRCUIT AND WAVEFORMS
VCC 7.0V NEGATIVE PULSE 90% VM 10% tTHL (tff) CL RL tw VM 10% tTLH (tr ) 0.3V 90% AMP (V)
VIN PULSE GENERATOR RT D.U.T.
VOUT
RL
tTLH (tr ) 90%
tTHL (tf ) AMP (V) 90% VM tw 10% 0.3V
Test Circuit for 3-State Outputs SWITCH POSITION TEST SWITCH closed tPLZ, tPZL All other open
POSITIVE PULSE 10%
VM
Input Pulse Definition INPUT PULSE REQUIREMENTS Family Amplitude VM 74ALS 3.5V 1.3V Rep.Rate 1MHz tw 500ns tTLH 2.0ns tTHL 2.0ns
DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
SC00072
1991 Feb 08
8
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
1991 Feb 08
9
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1991 Feb 08
10
Philips Semiconductors
Product specification
Transceivers
74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1
DEFINITIONS
Data Sheet Identification
Objective Specification
Product Status
Formative or in Design
Definition
This data sheet contains the design target or goal specifications for product development. Specifications 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.
Preliminary Specification
Preproduction Product
Product Specification
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve 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. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. 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 1997 All rights reserved. Printed in U.S.A.
Philips Semiconductors
1991 Feb 08 11

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