INTEGRATED CIRCUITS 74F245 Octal transceiver (3-State) Product specification IC15 Data Handbook Philips Semiconductors 1994 Nov 15 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 FEATURES PIN CONFIGURATION • Octal bidirectional bus interface • 3-State buffer outputs sink 64mA • 15mA source current • Outputs are placed in high impedance state during power-off 20 VCC T/R 1 conditions DESCRIPTION The 74F245 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 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. 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 11 B7 SF00198 TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F245 4.0ns 70mA ORDERING INFORMATION DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER 20-Pin Plastic DIP N74F245N SOT146-1 20-Pin Plastic SO N74F245D SOT163-1 20-Pin Plastic SSOP Type II N74F245DB SOT339-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Data inputs DESCRIPTION 3.5/1.0 70µA/0.6mA OE Output Enable input (active Low) 1.0/2.0 20µA/1.2mA T/R Transmit/Receive input 1.0/2.0 20µA/1.2mA A0–A7, B0–B7 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. LOGIC SYMBOL IEC/IEEE SYMBOL 19 2 3 4 5 6 7 8 G3 3EN1 (BA) 9 1 3EN1 (AB) ∇1 A0 A1 A2 A3 A4 A5 A6 A7 2 18 2∇ 19 OE 3 17 1 T/R 4 16 5 15 6 14 7 13 8 12 9 11 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 VCC = Pin 20 GND = Pin 10 SF00200 SF00199 November 15, 1994 2 853–0025 14256 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 LOGIC DIAGRAM OE 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 T/R 1 VCC = Pin 20 GND = Pin 10 SF00201 FUNCTION TABLE INPUTS OE OUTPUTS T/R L L Bus B data to Bus A L H Bus A data to Bus B H X Z H = High voltage level L = Low voltage level X = Don’t care Z = High impedance “off” state 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.) RATING UNIT VCC Supply voltage PARAMETER –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 Current applied to output in Low output state Tamb Operating free-air temperature range Tstg Storage temperature range SYMBOL –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 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 November 15, 1994 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 3 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL A0 A7 B0–B7 A0–A7, B0 B7 VOH O High level output voltage High-level B0 B7 B0–B7 VCC = MIN, VIL = MAX MAX, VIH = MIN VCC = MIN, MIN VIL = MAX, VIH = MIN A0 A7 A0–A7 VOL LIMITS TEST CONDITIONS1 PARAMETER Low-level output voltage B0–B7 VCC = MIN, VIL = MAX, VIH = MIN B0–B7 IOH 3mA O = –3mA IOH 15mA O = –15mA MIN TYP2 MAX UNIT ±10% VCC 2.4 ±5% VCC 2.7 ±10% VCC 2.0 V ±5% VCC 2.0 V V 3.4 V ±10% VCC 0.30 0.50 V IOL = 24mA ±5% VCC 0.35 0.50 V IOL = MAX ±10% VCC 0.55 V IOL = MAX ±5% VCC 0.42 0.55 V –0.73 –1.2 V IOL = 20mA VOL Low-level output voltage VIK Input clamp voltage Input current at maximum input voltage OE, T/R VCC = 5.5V, VI = 7.0V 100 II µA A0–A7, B0–B7 VCC = 5.5V, VI = 5.5V 1 mA IIH High-level input current OE, T/R only VCC = MAX, VI = 2.7V 20 µA IIL Low-level input current OE, T/R only VCC = MAX, VI = 0.5V –1.2 mA 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 –600 µA Short circuit output current3 Short-circuit –60 –150 mA IOS –100 –225 mA 60 87 mA ICC Supply current (total) 70 100 mA 75 110 mA VCC = MIN, II = IIK A0–A7 B0–B7 VCC = MAX ICCH 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. AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER VCC = +5.0V Tamb = +25°C CL = 50pF, RL = 500Ω TEST CONDITION VCC = +5.0V ± 10% Tamb = 0°C to +70°C CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX UNIT tPLH tPHL Propagation delay An to Bn, Bn to An Waveform 1 2.5 2.5 3.5 4.0 6.0 6.0 2.5 2.5 7.0 7.0 ns tPZH tPZL Output Enable time to High or Low level Waveform 2 Waveform 3 2.0 3.5 4.5 5.5 7.0 8.0 2.0 3.5 8.0 9.0 ns tPHZ tPLZ Output Disable time from High or Low level Waveform 2 Waveform 3 2.5 1.0 5.0 3.5 6.5 6.0 2.0 1.0 7.5 7.0 ns November 15, 1994 4 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 AC WAVEFORMS For all waveforms, VM = 1.5V. An, Bn VM VM tPLH tPHL VM Bn, An VM SF00202 Waveform 1. Propagation Delay for Non-Inverting Output OE OE VM VM tPZH VM tPHZ VM tPZL tPLZ An, Bn VOH–0.3V VM An, Bn VM VOL+0.3V 0V SF00203 SF00204 Waveform 2. 3-State Output Enable Time to High Level and Output Disable Time from High Level Waveform 3. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level 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 November 15, 1994 5 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 DIP20: plastic dual in-line package; 20 leads (300 mil) 1994 Nov 15 6 SOT146-1 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 SO20: plastic small outline package; 20 leads; body width 7.5 mm 1994 Nov 15 7 SOT163-1 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 NOTES 1994 Nov 15 8 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm 1994 Nov 15 9 SOT339-1 Philips Semiconductors Product specification Octal transceiver (3-State) 74F245 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 9397-750-05104