INTEGRATED CIRCUITS 74LVT2952 3.3V LVT octal registered transceiver (3-State) Product specification Supersedes data of 1994 Sep 27 IC23 Data Handbook 1998 Feb 19 Philips Semiconductors Product specification 3.3V Octal registered transceiver (3-State) FEATURES 74LVT2952 DESCRIPTION • 8-bit registered transceiver • Independent registers for A and B buses • Output capability: +64mA/-32mA • TTL input and output switching levels • Input and output interface capability to systems at 5V supply • Bus-hold data inputs eliminate the need for external pull-up The LVT2952 is a high-performance BiCMOS product designed for VCC operation at 3.3V. This device combines low static and dynamic power dissipation with high speed and high output drive. The 74LVT2952 device is an 8-bit registered transceiver. Two 8-bit back-to-back registers store data flowing in both directions between two bidirectional buses. resistors to hold unused inputs • Live insertion/extraction permitted • No bus current loading when output is tied to 5V bus • Power-up reset • Power-up 3-State • Latch-up protection exceeds 500mA per JEDEC Std 17 • ESD protection exceeds 2000V per MIL STD 883 Method 3015 Data applied to the inputs is entered and stored on the rising edge of the Clock (CPXX) provided that the Clock Enable (CEXX) is Low. The data is then present at the 3-State output buffers, but is only accessible when the Output Enable (OEXX) is Low. Data flow from A inputs to B outputs is the same as for B inputs to A outputs. and 200V per Machine Model QUICK REFERENCE DATA SYMBOL CONDITIONS Tamb = 25°C; GND = 0V PARAMETER TYPICAL UNIT 3.1 3.8 ns tPLH tPHL Propagation delay CPBA to An or CPAB to Bn CL = 50pF; VCC = 3.3V CIN Input capacitance VI = 0V or 3.0V 4 pF CI/O I/O pin capacitance Outputs disabled; VI/O = 0V or 3.0V 8 pF ICCZ Total supply current Outputs disabled; VCC = 3.6V 0.13 mA ORDERING INFORMATION TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER 24-Pin Plastic SOL PACKAGES –40°C to +85°C 74LVT2952 D 74LVT2952 D SOT137-1 24-Pin Plastic SSOP Type II –40°C to +85°C 74LVT2952 DB 74LVT2952 DB SOT340-1 24-Pin Plastic TSSOP Type I –40°C to +85°C 74LVT2952 PW 7LVT2952PW DH SOT355-1 PIN CONFIGURATION PIN DESCRIPTION B7 1 24 VCC B6 2 23 A7 B5 3 22 A6 B4 4 21 A5 B3 5 20 A4 B2 6 19 A3 B1 7 18 A2 B0 8 17 A1 OEAB 9 16 A0 CPAB 10 15 OEBA CEAB 11 14 CPBA GND 12 13 CEBA SV00036 1998 Feb 19 2 PIN NUMBER SYMBOL 10, 14 CPAB / CPBA Clock input A to B / Clock input B to A 11, 13 CEAB / CEBA Clock enable input A to B / Clock enable input B to A 16, 17, 18, 19, 20, 21, 22, 23 A0 – A7 Data inputs/outputs (A side) 8, 7, 6, 5, 4, 3, 2, 1 B0 – B7 Data outputs/outputs (B side) 9, 15 OEAB / OEBA 12 GND Ground (0V) 24 VCC Positive supply voltage NAME AND FUNCTION Output enable inputs 853-1765 18987 Philips Semiconductors Product specification 3.3V Octal registered transceiver (3-State) LOGIC SYMBOL 74LVT2952 LOGIC SYMBOL (IEEE/IEC) 15 EN3 (BA) 13 14 16 17 18 19 20 21 22 23 9 11 10 A0 A1 A2 A3 A4 A5 A6 A7 10 CPAB 11 CEAB OEBA 16 15 EN4 (AB) G2 2C6 3 1 5D 6D 1 4 8 14 CPBA 17 7 13 CEBA 18 6 B0 B1 B2 B3 B4 B5 B6 B7 19 5 20 4 21 3 22 2 23 1 8 7 OEAB G1 1C5 6 5 4 3 2 9 1 SV00037 SV00038 LOGIC DIAGRAM CEAB11 CPAB10 OEAB 9 DETAIL A CE Q A0 16 D CP Q CE CP D A1 A2 A3 A4 A5 A6 A7 17 18 19 20 21 22 23 8 7 6 5 4 3 2 1 DETAIL A X 7 B0 B1 B2 B3 B4 B5 B6 B7 13 CEBA CPBA OEBA 14 15 SV00039 FUNCTION TABLE for Register An or Bn INPUTS An or Bn CPXX CEXX INTERNAL Q X X H NC L H ↑ ↑ L L L H FUNCTION TABLE for Output Enable INPUTS OPERATING MODE OEXX INTERNAL Q An or Bn OUTPUTS OPERATING MODE Hold data H X Z Disable outputs Load data L L L H L H Enable outputs H = High voltage level L = Low voltage level ↑ = Low-to-High transition X = Don’t care XX = AB or BA NC= No change 1998 Feb 19 H = High voltage level L = Low voltage level X = Don’t care XX = AB or BA Z = High impedance ”off” state 3 Philips Semiconductors Product specification 3.3V Octal registered transceiver (3-State) 74LVT2952 ABSOLUTE MAXIMUM RATINGS1, 2 PARAMETER SYMBOL VCC IIK RATING UNIT –0.5 to +4.6 V –50 mA –0.5 to +7.0 V VO < 0 –50 mA Output in Off or High state –0.5 to +7.0 V Output in High state –64 Output in Low state 128 DC supply voltage DC input diode current VI < 0 voltage3 VI DC input IOK DC output diode current VOUT CONDITIONS DC output voltage3 IOUT O DC output current Tstg Storage temperature range mA °C –65 to 150 NOTES: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C. 3. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL VCC PARAMETER UNIT DC supply voltage MIN MAX 2.7 3.6 V 0 5.5 V VI Input voltage VIH High-level input voltage VIL Low-level Input voltage 0.8 V IOH High-level output current –32 mA Low-level output current 32 Low-level output current; current duty cycle ≤ 50%, f ≥ 1kHz 64 IOL O ∆t/∆v Input transition rise or fall rate; Outputs enabled Tamb Operating free-air temperature range 1998 Feb 19 2.0 mA –40 4 V 10 ns/V +85 °C Philips Semiconductors Product specification 3.3V Octal registered transceiver (3-State) 74LVT2952 DC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITIONS Temp = -40°C to +85°C MIN VIK Input clamp voltage VCC = 2.7V; IIK = –18mA VCC = 2.7 to 3.6V; IOH = –100µA VOH VOL VRST High-level output voltage Low-level output voltage Power-up output low voltage5 2.4 2.5 VCC = 3.0V; IOH = –32mA 2.0 2.2 0.1 0.2 VCC = 2.7V; IOL = 24mA 0.3 0.5 VCC = 3.0V; IOL = 16mA 0.25 0.4 VCC = 3.0V; IOL = 32mA 0.3 0.5 VCC = 3.0V; IOL = 64mA 0.4 0.55 VCC = 3.6V; IO = 1mA; VI = GND or VCC 0.13 0.55 ±0.1 ±1.0 1 10 1 20 0.1 1.0 –1 -5.0 1 ±100 Control pins VCC = 3.6V; VI = 5.5V I/O Data pins4 VCC = 0V; VI or VO = 0 to 4.5V VCC = 3V; VI = 0.8V IHOLD IEX IPU/PD Bus Hold current A inputs6 VCC = 3V; VI = 2.0V –75 –150 VCC = 0V to 3.6V; VCC = 3.6V ±500 V V µA µA µA VO = 5.5V; VCC = 3.0V 60 125 µA Power up/down 3-State output current3 VCC ≤ 1.2V; VO = 0.5V to VCC; VI = GND or VCC; OE/OE = Don’t care ±1 ±100 µA VCC = 3.6V; Outputs High, VI = GND or VCC, IO = 0 0.13 0.19 VCC = 3.6V; Outputs Low, VI = GND or VCC, IO = 0 3 12 VCC = 3.6V; Outputs Disabled; VI = GND or VCC, IO = 0 0.13 0.19 VCC = 3V to 3.6V; One input at VCC – 0.6V, Other inputs at VCC or GND 0.1 0.2 Quiescent supply current ICCZ ∆ICC 150 V Current into an output in the High state when VO > VCC ICCH ICCL 75 UNIT V VCC = 2.7V; IOL = 100µA VCC = 3.6V; VI = 0 Output off current –1.2 VCC = 2.7V; IOH = –8mA VCC = 3.6V; VI = VCC IOFF –0.9 VCC–0.1 VCC = 0 or 3.6V; VI = 5.5V Input leakage current MAX VCC–0.2 VCC = 3.6V; VI = VCC or GND II TYP1 Additional supply current per input pin2 mA mA NOTES: 1. All typical values are at VCC = 3.3V and Tamb = 25°C. 2. This is the increase in supply current for each input at VCC = 0.6V. 3. This parameter is valid for any VCC between 0V and 1.3V with a transition time of up to 10msec. From VCC = 1.3V to VCC = 3.3V ± 0.3V a transition time of 100µsec is permitted. This parameter is valid for Tamb = 25°C only. 4. Unused pins at VCC or GND. 5. For valid test results, data must not be loaded into the flip-flops (or latches) after applying power. 6. This is the bus hold overdrive current required to force the input to the opposite logic state. 1998 Feb 19 5 Philips Semiconductors Product specification 3.3V Octal registered transceiver (3-State) 74LVT2952 AC CHARACTERISTICS GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω; Tamb = –40°C to +85°C. LIMITS SYMBOL PARAMETER VCC = 3.3V ± 0.3V VCC = 2.7V MIN TYP1 MAX WAVEFORM MAX UNIT fMAX Maximum clock frequency 1 150 200 MHz tPLH tPHL Propagation delay CPBA to An, CPAB to Bn 1 1.3 1.8 3.1 3.8 6.1 6.0 7.1 6.9 ns tPZH tPZL Output enable time OEBA to An, OEAB to Bn 3 4 1.0 1.2 3.4 3.6 5.6 6.5 6.7 8.0 ns tPHZ tPLZ Output disable time OEBA to An, OEAB to Bn 3 4 1.0 1.6 3.7 3.4 6.3 5.1 6.9 5.3 ns VCC = 2.7V UNIT NOTE: 1. All typical values are at VCC = 3.3V and Tamb = 25°C. AC SETUP REQUIREMENTS GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω; Tamb = –40°C to +85°C. LIMITS SYMBOL PARAMETER VCC = 3.3V ± 0.3V WAVEFORM MIN TYP1 MIN ts(H) ts(L) Setup time An to CPAB or Bn to CPBA 2 2.5 2.5 1 1 2.8 3.0 ns tn(H) tn(L) Hold time An to CPAB ro Bn to CPBA 2 1.5 2.5 –0.5 –0.5 0.7 2.6 ns ts(H) ts(L) Setup time CEAB to CPAB or CEBA to CPBA 2 0.9 2.4 0.3 –0.3 0.8 2.7 ns tn(H) tn(L) Hold time CEAB to CPAB or CEBA to CPBA 2 1.5 2.5 0.3 0 0.7 2.6 ns tW(H) tW(L) CPAB or CPBA pulse width High or Low 1 3.3 3.3 1 1 3.3 3.3 ns AC WAVEFORMS ÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉ ÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉ ÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉ VM = 1.5V, VIN = GND to 2.7V 2.7V CPBA or CPAB 1.5V 1.5V 1.5V 1.5V 1.5V 0V 1.5V th(H) ts(L) th(L) 2.7V tw(L) tPHL 1.5V 0V ts(H) tw(H) CPAB, CPBA tPLH VOH An or Bn 2.7V An, Bn CEAB, CEBA 1/fMAX 1.5V 1.5V 0V 1.5V 1.5V NOTE: The shaded areas indicate when the input is permitted to change for predictable output performance. VOL SV00040 SV00131 Waveform 2. Data Setup and Hold Times Waveform 1. Propagation Delay, Clock Input to Output, Clock Pulse Width, and Maximum Clock Frequency 1998 Feb 19 6 Philips Semiconductors Product specification 3.3V Octal registered transceiver (3-State) 74LVT2952 2.7V OEAB, OEBA 1.5V 2.7V OEAB, OEBA 1.5V 1.5V 1.5V 0V tPZH 0V tPHZ tPZL tPLZ 3V An, Bn 1.5V An, Bn 1.5V 0V SV00132 SV00133 Waveform 3. 3-State Output Enable Time to High Level and Output Disable Time from High Level Waveform 4. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level TEST CIRCUIT AND WAVEFORMS 6.0V VCC Open VIN VOUT PULSE GENERATOR RL GND tW 90% NEGATIVE PULSE 90% VM VM 10% 10% D.U.T. RT 0V CL RL tTHL (tF) tTLH (tR) tTLH (tR) tTHL (tF) 90% Test Circuit for 3-State Outputs POSITIVE PULSE AMP (V) 90% VM VM 10% 10% tW SWITCH POSITION TEST SWITCH tPLH/tPHL Open tPLZ/tPZL 6V tPHZ/tPZH GND AMP (V) 0V VM = 1.5V Input Pulse Definition INPUT PULSE REQUIREMENTS DEFINITIONS FAMILY RL = Load resistor; see AC CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. 74LVT Amplitude Rep. Rate 2.7V 10MHz tW tR tF 500ns 2.5ns 2.5ns RT = Termination resistance should be equal to ZOUT of pulse generators. SV00092 1998 Feb 19 7 Philips Semiconductors Product specification 3.3V LVT octal registered transceiver (3-State) SO24: plastic small outline package; 24 leads; body width 7.5 mm 1998 Feb 19 8 74LVT2952 SOT137-1 Philips Semiconductors Product specification 3.3V LVT octal registered transceiver (3-State) SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm 1998 Feb 19 9 74LVT2952 SOT340-1 Philips Semiconductors Product specification 3.3V LVT octal registered transceiver (3-State) TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm 1998 Feb 19 10 74LVT2952 SOT355-1 Philips Semiconductors Product specification 3.3V LVT octal registered transceiver (3-State) NOTES 1998 Feb 19 11 74LVT2952 Philips Semiconductors Product specification 3.3V LVT octal registered transciever (3-State) 74LVT2952 Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. Product specification 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. [1] Please consult the most recently issued datasheet before initiating or completing a design. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves 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. Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 print code Document order number: yyyy mmm dd 12 Date of release: 05-96 9397-750-03546