INTEGRATED CIRCUITS 74F2245 Octal transceiver with 30 equivalent output termination (3-State) Product specification IC15 Data Handbook 1996 May 10 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) FEATURES 74F2245 PIN CONFIGURATION • Octal bidirectional bus interface • 30 Ohm output termination for driving DRAM • Outputs are placed in high impedance state during power-off 20 VCC T/R 1 conditions • SSOP Type II package DESCRIPTION The 74F2245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. 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 The 30 Ohm series termination on the outputs reduces over/undershoot making them ideal for driving DRAM. TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F2245 4.0ns 70mA ORDERING INFORMATION DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER 20-Pin Plastic DIP N74F2245N SOT146-1 20-Pin Plastic SOL N74F2245D SOT163-1 20-Pin Plastic SSOP N74F2245DB SOT339-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS A0-A7, B0-B7 DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Data inputs 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 A port outputs 150/8 3.0mA/5mA* B0-B7 B port outputs 150/8 3.0mA/5mA* NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. * 12mA with reduced noise margin 1996 May 10 2 853-1833 16802 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) LOGIC SYMBOL 74F2245 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 B4 15 14 B5 13 B6 12 B7 11 VCC = Pin 20 GND = Pin 10 SF00200 SF00199 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 FUNCTION TABLE INPUTS OUTPUTS OE 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 1996 May 10 3 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) 74F2245 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 24 mA A0-A7 B0-B7 24 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 VIH High-level input voltage 2.0 VIL Low-level input voltage 0.8 V IIK Input clamp current –18 mA A0-A7 –3 mA IOH O High level output current High-level B0-B7 –3* mA A0-A7 5* mA IOL O Low level output current Low-level B0-B7 5* mA Tamb Operating free-air temperature range +70 °C 0 12 mA with reduced noise margin 1996 May 10 4 V V Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) 74F2245 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 A0 A7 B0-B7 A0-A7, B0 B7 A0 A7 B0-B7 A0-A7, B0 B7 VOL O LIMITS TEST CONDITIONS2 PARAMETER Low level output voltage Low-level A0 A7 B0-B7 B0 B7 A0-A7, VCC = MIN, VIL = MAX MAX, VIH = MIN IOH 3mA O = –3mA IOH 12mA O = –12mA IOL = 5mA VCC = MIN, VIL = MAX MAX, VIH = MIN IOL = 5mA IOL O = 12mA MIN TYP1 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 0.42 0.50 V ±5% VCC 0.42 0.50 V ±10% VCC 0.55 0.67 V ±5% VCC 0.55 0.67 –0.73 –1.2 V VIK Input clamp voltage VCC = MIN, II = IIK 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 –60 –150 mA 60 87 mA 70 100 mA 75 110 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. 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 7.0 7.0 2.5 2.5 8.5 8.0 ns tPZH tPZL Output Enable time to High or Low level Waveform 2 Waveform 3 2.5 3.5 4.5 5.5 8.0 8.5 2.0 3.5 9.5 9.5 ns tPHZ tPLZ Output Disable time from High or Low level Waveform 2 Waveform 3 2.5 1.5 5.0 3.5 7.0 6.5 2.0 1.0 7.5 7.0 ns 1996 May 10 5 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) 74F2245 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 VOH–0.3V VM An, Bn 0V SF00203 Waveform 2. 3-State Output Enable Time to High Level and Output Disable Time from High 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 1996 May 10 6 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) DIP20: plastic dual in-line package; 20 leads (300 mil) 1996 May 10 7 74F2245 SOT146-1 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) SO20: plastic small outline package; 20 leads; body width 7.5 mm 1996 May 10 8 74F2245 SOT163-1 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm 1996 May 10 9 74F2245 SOT339-1 Philips Semiconductors Product specification Octal transceiver with 30 equivalent output termination (3-State) 74F2245 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 9397-750-05199