INTEGRATED CIRCUITS 74F621 Octal bus transceiver, non-inverting (open collector) Product specification IC15 Data Handbook 1996 Jan 05 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) FEATURES 74F621 PIN CONFIGURATION • High-impedance NPN base inputs for reduced loading 1 20 VCC A0 2 19 OEBA A1 3 18 B0 A2 4 17 B1 A3 5 16 B2 A4 6 15 B3 A5 7 14 B4 A6 8 13 B5 A7 9 12 B6 11 B7 OEAB (20µA in High and Low states) • Octal bidirectional bus interface • Open collector outputs sink 64mA • Non-inverting DESCRIPTION The 74F621 is an octal transceiver featuring non-inverting open collector bus-compatible outputs in both send and receive directions. The outputs are capable of sinking 64mA, providing very good capacitive drive characteristics. GND 10 This octal bus transceiver is designed for asynchronous two-way communication between data buses. The control function implementation allows for maximum flexibility in timing. SF01135 The device allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon 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 74F621 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 bus lines (16 in all) will remain in their last states. TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F621 8.0ns 105mA ORDERING INFORMATION DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C PKG DWG # 20-pin plastic DIP N74F621N SOT146-1 20-pin plastic SOL N74F621D SOT163-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION 74F(U.L.) HIGH/LOW LOAD VALUE HIGH/LOW A0 - A7, B0 - B7 Data inputs 1.0/0.033 20µA/20µA OEBA, OEAB Output Enable inputs 1.0/0.033 20µA/20µA A0 - A7 Data outputs OC/40 OC/24mA B0 - B7 Data outputs OC/106.7 OC/64mA NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. OC = Open Collector. 1996 Jan 05 2 853–0380 16185 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) LOGIC SYMBOL 74F621 LOGIC SYMBOL (IEEE/IEC) 19 2 3 A0 1 OEAB 19 OEBA 4 A1 A2 5 A3 6 A4 7 A5 8 A6 9 EN1 1 A7 EN2 2 18 1 2 B0 18 B1 B2 B3 B4 B5 B6 B7 17 16 15 14 13 12 11 VCC = Pin 20 GND = Pin 10 3 17 4 16 5 15 6 14 7 13 SF01126 8 12 9 11 SF01137 LOGIC DIAGRAM FUNCTION TABLE INPUTS 19 OPERATING MODES OEBA OEAB 1 A0 2 18 3 17 A1 4 16 A3 5 15 A4 6 14 A5 7 13 A6 8 12 9 11 A2 A7 VCC = GND = Pin 20 Pin 10 1996 Jan 05 OEBA OEAB L L B data to A bus H H A data to B bus H L OFF L H B0 B data to A bus B1 H = L = X = OFF= B2 B3 B4 B5 B6 B7 SF01130 3 A data to B bus High voltage level Low voltage level Don’t care High if pull-up resistor is connected to open collector output Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) 74F621 ABSOLUTE MAXIMUM RATINGS (Operation beyond the limits 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 PARAMETER RATING UNIT VCC Supply voltage –0.5 to +7.0 V VIN Input voltage –0.5 to +7.0 V IIN Input current VOUT Voltage applied to output in High output state IOUT O Current applied to output in Low output state Tamb Operating free-air temperature range Tstg Storage temperature range –30 to +5 mA –0.5 to +5.5 V 48 mA A0–A7 B0–B7 128 mA 0 to +70 °C –65 to +150 °C RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL PARAMETER MIN NOM MAX 5.0 5.5 UNIT VCC Supply voltage 4.5 V VIH High-level input voltage 2.0 VIL Low-level input voltage 0.8 V IIK Input clamp current –18 mA VOH High-level output current 4.5 V A0–A7 24 mA IOL O Low level output current Low-level B0–B7 64 mA Tamb Operating free-air temperature range 70 °C V 0 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) LIMITS SYMBOL TEST CONDITIONSNO TAG PARAMETER MIN IOH High-level output current Low-level output voltage B0 B7 B0–B7 VIK Input clamp voltage II Input current at input maximum in ut voltage IIH High-level input current IIL Low-level input current ICC Supply current (total) 250 µA ±10%VCC 0.35 0.50 V ±5%VCC 0.35 0.50 V IOL = 48mA ±10%VCC 0.38 0.55 V IOL = 64mA ±5%VCC 0.42 0.55 V –0.73 –1.2 V 100 µA IOL O = 24mA VCC = MIN, VIL = MAX MAX, VIH = MIN, UNIT MAX VCC = MIN, VIL = MAX, VIH=MIN, VOH = MAX A0 A7 A0–A7 VOL O TYP NO TAG VCC = MIN, II = IIK OEBA, OEAB VCC = MAX, VI = 7.0V others VCC = 0.0V, VI = 5.5V 1 mA VCC = MAX, VI = 2.7V 20 µA VCC = MAX, VI = 0.5V –20 µA ICCH ICCL VCC = MAX OEBA = OEAB = A0–A7 = 4.5V 105 140 mA OEBA = OEAB = 4.5V, A0–A7 = GND 105 140 mA 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 = 25°C. 1996 Jan 05 4 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) 74F621 AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL TEST CONDITION PARAMETER VCC = +5V ± 10% Tamb = 0°C to +70°C CL = 50pF, RL = 500Ω VCC = +5V Tamb = +25°C CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX UNIT tPLH tPHL Propagation delay An to Bn Waveform 1 6.0 4.0 9.5 6.0 12.0 8.0 5.5 3.5 13.0 8.5 ns tPLH tPHL Propagation delay Bn to An Waveform 1 6.0 3.5 9.0 5.5 12.0 7.5 5.5 3.0 12.5 8.0 ns tPLH tPHL Propagation delay OEBA to An Waveform 2 6.0 3.5 10.0 6.5 13.5 10.5 5.5 3.0 14.0 11.0 ns tPLH tPHL Propagation delay OEAB to Bn Waveform 3 7.0 3.5 12.0 6.5 15.0 9.5 6.0 3.0 17.0 10.0 ns AC WAVEFORMS For all waveforms, VM = 1.5V. An or Bn VM VM tPLH tPHL VM Bn or An VM SF01132 Waveform 1. For Non-Inverting Outputs OEBA VM tPLH Bn OEAB VM tPHL VM VM tPHL VM Bn SF01138 tPLH VM VM SF01139 Waveform 2. Propagation Delay, OEBA to An 1996 Jan 05 VM Waveform 3. Propagation Delay, OEAB to Bn 5 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) 74F621 TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS 18 16 14 12 tPLH 10 Propagation delay (ns) 8 6 tPHL 4 2 0 0 100 200 300 400 Load Resistor () 500 600 SF01153 NOTE: When using open-collector parts, the value of the pull-up resistor greatly affects the value of the tPLH. For example, changing the pull-up resistor value from 500 to 100 will improve the tPLH up to 50% with only slight increase in the tPHL. However, if the pull-up resistor is changed, the user must take certain that the total IOL current through the resistor and the total IIL’s of the receivers do not exceed the IOL maximum specification. TEST CIRCUIT AND WAVEFORMS 7.0V VCC tw 90% VIN RL VOUT PULSE GENERATOR NEGATIVE PULSE VM CL AMP (V) VM 10% D.U.T. RT 90% 10% tTHL (tf ) tTLH (tr ) tTLH (tr ) tTHL (tf ) 0V RL AMP (V) 90% 90% Test Circuit for Open Collector Outputs POSITIVE PULSE VM VM 10% 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. 10% tw 0V Input Pulse Definition INPUT PULSE REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate tw tTLH tTHL 1MHz 500ns 2.5ns 2.5ns SF00027 1996 Jan 05 6 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) DIP20: plastic dual in-line package; 20 leads (300 mil) 1996 Jan 05 7 74F621 SOT146-1 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) SO20: plastic small outline package; 20 leads; body width 7.5 mm 1996 Jan 05 8 74F621 SOT163-1 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) NOTES 1996 Jan 05 9 74F621 Philips Semiconductors Product specification Octal bus transceiver, non-inverting (open collector) 74F621 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Formative or in Design This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. Preliminary Specification Preproduction Product 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. Product Specification Full Production 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. 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 Philips Semiconductors and Philips Electronics North America Corporation register eligible circuits under the Semiconductor Chip Protection Act. Copyright Philips Electronics North America Corporation 1996 All rights reserved. Printed in U.S.A. (print code) Document order number: Date of release: July 1994 9397-750-05147