INTEGRATED CIRCUITS 74F1245 Octal transceiver (3-State) Product specification IC15 Data Handbook Philips Semiconductors 1995 Mar 01 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 FEATURES DESCRIPTION • Same function and pinout as 74F245 • High impedance NPN base inputs for reduced loading (70µA in The 74F1245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The B port outputs are capable of sinking 64mA and sourcing up to 15mA, producing very good capacitive drive characteristics. The device features an Output Enable (OE) input for easy cascading and Transmit/Receive (T/R) input for direction control. The 3-State outputs, B0–B7, have been designed to prevent output bus loading if the power is removed from the device. Low and High states) • Useful in applications where light loading bus loading or direct interface with output of a MOS microprocessor is desired • Octal bidirectional bus interface • Glitch free during 3-State power up and power down • 3-State buffer outputs sink 64mA and source 15mA TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F1245 5.0ns 115mA ORDERING INFORMATION DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER 20-Pin Plastic DIP N74F1245N SOT146-1 20-Pin Plastic SOL N74F1245D SOT163-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION A0–A7, B0–B7 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW A and B port inputs 3.5/0.117 70µA/70µA OE Output Enable input (active Low) 2.0/0.033 40µA/20µA T/R Transmit/Receive input 2.0/0.033 40µA/20µA A0–A7 A port outputs 150/40 3.0mA/24mA B0–B7 B port outputs 750/106.7 15mA/64mA NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. PIN CONFIGURATION T/R 1 LOGIC SYMBOL 20 VCC A0 2 19 OE 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 GND 10 19 OE 1 T/R 11 B7 2 3 4 5 6 7 8 9 A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 18 17 16 15 14 13 12 11 SF00198 VCC = Pin 20 GND = Pin 10 SF00199 1995 Mar 01 2 853-0885 14921 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 LOGIC SYMBOL (IEEE/IEC) FUNCTION TABLE INPUTS 19 G3 OE T/R An Bn L L A=B INPUTS L H INPUTS B=A H X Z Z 3EN1 (BA) 1 3EN2 (AB) ∇1 2 18 2∇ 3 17 4 16 5 15 6 14 7 13 8 12 9 11 INPUTS/OUTPUTS H = High voltage level L = Low voltage level X = Don’t care Z = High impedance “off” state SF00649 LOGIC DIAGRAM OE T/R A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7 19 1 VCC = Pin 20 GND = Pin 10 SF00201 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 1995 Mar 01 3 –30 to +5 mA –0.5 to +5.5 V A0–A7 48 mA B0–B7 128 mA 0 to +70 °C –65 to +150 °C Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL PARAMETER MIN NOM MAX 5.0 5.5 VCC Supply voltage 4.5 VIH High-level input voltage 2.0 VIL Low-level input voltage IIK Input clamp current IOH O High level output current High-level IOL O Low level output current Low-level Tamb Operating free-air temperature range UNIT V V 0.8 V –18 mA A0–A7 –3 mA B0–B7 –15 mA A0–A7 24 mA B0–B7 64 mA 70 °C 0 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) LIMITS SYMBOL TEST CONDITIONSNO TAG PARAMETER A0–A7 B0–B7 A0–A7, VOH High-level out output ut voltage B0–B7 A0–A7 VOL output Low-level out ut voltage B0–B7 VCC = MIN, VIL = MAX MAX, VIH = MIN VCC = MIN, VIL = MAX MAX, VIH = MIN IOH = –3mA IOH = –15mA MIN ±10% VCC 2.4 ±5% VCC 2.7 ±10% VCC 2.0 ±5% VCC 2.0 TYP NO TAG MAX UNIT V 3.3 V V V ±10% VCC 0.35 0.50 V ±5% VCC 0.35 0.50 V IOL = 48mA ±10% VCC 0.30 0.55 V IOL = 64mA ±5% VCC 0.42 0.55 V –0.73 –1.2 V IOL = 24mA VIK Input clamp voltage VCC = MIN, II = IIK II Input current at maximum input voltage OE, T/R VCC = 0.0V, VI = 7.0V 100 µA A0–A7, B0–B7 VCC = 0.0V, VI = 5.5V 100 µA IIH High-level input current OE, T/R only VCC = MAX, VI = 2.7V 40 µA IIL Low-level input current OE, T/R only VCC = MAX, VI = 0.5V –20 µA IIH+IOZH Off-state output current High-level voltage applied VCC = MAX, VO = 2.7V 70 µA IIL+IOZL Off-state output current Low-level voltage applied VCC = MAX, VO = 0.5V –70 µA IOS Short-circuit output currentNO TAG –60 –150 mA –100 –225 mA 120 155 mA 116 150 mA 110 165 mA A0–A7 B0–B7 VCC = MAX ICCH ICC Supply current (total) ICCL VCC = MAX ICCZ 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. 3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, IOS tests should be performed last. 1995 Mar 01 4 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL VCC = +5.0V ± 10% Tamb = 0°C to +70°C CL = 50pF, RL = 500Ω VCC = +5.0V Tamb = +25°C CL = 50pF, RL = 500Ω TEST CONDITION PARAMETER MIN TYP MAX MIN MAX UNIT tPLH tPHL Propagation delay An to Bn, Bn to An Waveform NO TAG 2.0 2.5 4.0 5.0 6.5 7.5 1.5 2.0 7.0 8.0 ns tPZH tPZL Output Enable time OE to An or Bn Waveform NO TAG Waveform NO TAG 3.0 4.0 6.0 7.5 8.0 10.0 2.5 3.5 9.0 11.0 ns tPHZ tPLZ Output Disable time OE to An or Bn Waveform NO TAG Waveform NO TAG 2.0 4.0 5.0 7.0 8.0 10.0 1.5 4.0 9.0 11.0 ns AC WAVEFORMS For all waveforms, VM = 1.5V. OE An, Bn VM VM VM tPLH VM tPZL tPHL tPLZ An, Bn VM Bn, An VM VM VOL+0.3V SF00204 SF00202 Waveform 1. Propagation Delay for Non-Inverting Output Waveform 3. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level OE VM VM tPZH tPHZ VM An, Bn VOH–0.3V 0V SF00203 Waveform 2. 3-State Output Enable Time to High Level and Output Disable Time from High Level 1995 Mar 01 5 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 TEST CIRCUIT AND WAVEFORMS VCC 7.0V VIN RL VOUT PULSE GENERATOR tw 90% 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% TEST tPLZ tPZL All other SWITCH closed closed open 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 SWITCH POSITION 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 SF00128 1995 Mar 01 6 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 DIP20: plastic dual in-line package; 20 leads (300 mil) 1995 Mar 01 7 SOT146-1 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 SO20: plastic small outline package; 20 leads; body width 7.5 mm 1995 Mar 01 8 SOT163-1 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 NOTES 1995 Mar 01 9 Philips Semiconductors Product specification Octal transceiver (3-State) 74F1245 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 1995 All rights reserved. Printed in U.S.A.