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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
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
FEATURES
* 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 * 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
and 200V per Machine Model resistors to hold unused inputs
DESCRIPTION
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. 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.
QUICK REFERENCE DATA
SYMBOL tPLH tPHL CIN CI/O ICCZ PARAMETER Propagation delay CPBA to An or CPAB to Bn Input capacitance I/O pin capacitance Total supply current CONDITIONS Tamb = 25C; GND = 0V CL = 50pF; VCC = 3.3V VI = 0V or 3.0V Outputs disabled; VI/O = 0V or 3.0V Outputs disabled; VCC = 3.6V TYPICAL 3.1 3.8 4 8 0.13 UNIT
ns pF pF mA
ORDERING INFORMATION
PACKAGES 24-Pin Plastic SOL 24-Pin Plastic SSOP Type II 24-Pin Plastic TSSOP Type I TEMPERATURE RANGE -40C to +85C -40C to +85C -40C to +85C OUTSIDE NORTH AMERICA 74LVT2952 D 74LVT2952 DB 74LVT2952 PW NORTH AMERICA 74LVT2952 D 74LVT2952 DB 7LVT2952PW DH DWG NUMBER SOT137-1 SOT340-1 SOT355-1
PIN CONFIGURATION
B7 B6 B5 B4 B3 B2 B1 B0 OEAB 1 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 VCC A7 A6 A5 A4 A3 A2 A1 A0 OEBA CPBA CEBA
PIN DESCRIPTION
PIN NUMBER 10, 14 11, 13 16, 17, 18, 19, 20, 21, 22, 23 8, 7, 6, 5, 4, 3, 2, 1 9, 15 12 24 SYMBOL CPAB / CPBA CEAB / CEBA NAME AND FUNCTION Clock input A to B / Clock input B to A Clock enable input A to B / Clock enable input B to A Data inputs/outputs (A side)
A0 - A7
B0 - B7 OEAB / OEBA GND VCC
Data outputs/outputs (B side) Output enable inputs Ground (0V) Positive supply voltage
CPAB 10 CEAB 11 GND 12
SV00036
1998 Feb 19
2
853-1765 18987
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
15 EN3 (BA) 13 14 G1 1C5 EN4 (AB) G2 2C6 3 6D 1 1 5D 4 7 6 5 4 3 2 1 8
16 17 18 19
20 21 22
23
9 11 10
A0 A1 A2 A3 A4 A5 A6 A7 10 11 14 13 CPAB CEAB CPBA CEBA B0 B1 B2 B3 B4 B5 B6 B7 OEBA OEAB 15 9
16
17 18 19 20
8
7
6
5
4
3
2
1
21 22
SV00037
23
SV00038
LOGIC DIAGRAM
CEAB11
CPAB10 OEAB 9 DETAIL A A0 16 CE Q D CP Q CE CP D
8
B0
A1 A2 A3 A4 A5 A6 A7 CEBA
17 18 19 20 21 22 23 13
DETAIL A X 7
7 6 5 4 3 2 1
B1 B2 B3 B4 B5 B6 B7
CPBA OEBA
14 15
SV00039
FUNCTION TABLE for Register An or Bn
INPUTS An or Bn X L H CPXX X CEXX H L L INTERNAL Q NC L H OPERATING MODE Hold data Load data
FUNCTION TABLE for Output Enable
INPUTS OEXX H L L INTERNAL Q X L H An or Bn OUTPUTS Z L H OPERATING MODE Disable outputs 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
H = High voltage level L = Low voltage level X = Don't care XX = AB or BA Z = High impedance "off" state
1998 Feb 19
3
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL VCC IIK VI IOK VOUT IO OUT Tstg PARAMETER DC supply voltage DC input diode current DC input voltage3 VO < 0 Output in Off or High state Output in High state DC output current Output in Low state Storage temperature range 128 -65 to 150 C VI < 0 CONDITIONS RATING -0.5 to +4.6 -50 -0.5 to +7.0 -50 -0.5 to +7.0 -64 mA UNIT V mA V mA V
DC output diode current DC output voltage3
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 150C. 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 VI VIH VIL IOH IO OL t/v Tamb DC supply voltage Input voltage High-level input voltage Low-level Input voltage High-level output current Low-level output current Low-level output current; current duty cycle 50%, f 1kHz Input transition rise or fall rate; Outputs enabled Operating free-air temperature range -40 PARAMETER MIN 2.7 0 2.0 0.8 -32 32 mA 64 10 +85 ns/V C MAX 3.6 5.5 V V V V mA UNIT
1998 Feb 19
4
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
DC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITIONS Temp = -40C to +85C MIN VIK Input clamp voltage VCC = 2.7V; IIK = -18mA VCC = 2.7 to 3.6V; IOH = -100A VOH High-level output voltage VCC = 2.7V; IOH = -8mA VCC = 3.0V; IOH = -32mA VCC = 2.7V; IOL = 100A VCC = 2.7V; IOL = 24mA VOL Low-level output voltage VCC = 3.0V; IOL = 16mA VCC = 3.0V; IOL = 32mA VCC = 3.0V; IOL = 64mA VRST Power-up output low voltage5 VCC = 3.6V; IO = 1mA; VI = GND or VCC VCC = 3.6V; VI = VCC or GND VCC = 0 or 3.6V; VI = 5.5V II Input leakage current VCC = 3.6V; VI = 5.5V VCC = 3.6V; VI = VCC VCC = 3.6V; VI = 0 IOFF IHOLD Output off current Bus Hold current A inputs6 Current into an output in the High state when VO > VCC Power up/down 3-State output current3 VCC = 0V; VI or VO = 0 to 4.5V VCC = 3V; VI = 0.8V VCC = 3V; VI = 2.0V VCC = 0V to 3.6V; VCC = 3.6V IEX IPU/PD ICCH ICCL ICCZ ICC Additional supply current per input pin2 Quiescent supply current VO = 5.5V; VCC = 3.0V VCC 1.2V; VO = 0.5V to VCC; VI = GND or VCC; OE/OE = Don't care VCC = 3.6V; Outputs High, VI = GND or VCC, IO = 0 VCC = 3.6V; Outputs Low, VI = GND or VCC, IO = 0 VCC = 3.6V; Outputs Disabled; VI = GND or VCC, IO = 0 VCC = 3V to 3.6V; One input at VCC - 0.6V, Other inputs at VCC or GND 75 -75 500 60 1 0.13 3 0.13 0.1 125 100 0.19 12 0.19 0.2 mA mA A A I/O Data pins4 Control pins VCC-0.2 2.4 2.0 TYP1 -0.9 VCC-0.1 2.5 2.2 0.1 0.3 0.25 0.3 0.4 0.13 0.1 1 1 0.1 -1 1 150 -150 A 0.2 0.5 0.4 0.5 0.55 0.55 1.0 10 20 1.0 -5.0 100 A A V V V MAX -1.2 V UNIT
NOTES: 1. All typical values are at VCC = 3.3V and Tamb = 25C. 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 100sec is permitted. This parameter is valid for Tamb = 25C 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 = 500; Tamb = -40C to +85C. LIMITS SYMBOL PARAMETER WAVEFORM MIN fMAX tPLH tPHL tPZH tPZL tPHZ tPLZ Maximum clock frequency Propagation delay CPBA to An, CPAB to Bn Output enable time OEBA to An, OEAB to Bn Output disable time OEBA to An, OEAB to Bn 1 1 3 4 3 4 150 1.3 1.8 1.0 1.2 1.0 1.6 VCC = 3.3V 0.3V TYP1 200 3.1 3.8 3.4 3.6 3.7 3.4 6.1 6.0 5.6 6.5 6.3 5.1 7.1 6.9 6.7 8.0 6.9 5.3 MAX VCC = 2.7V MAX MHz ns ns ns UNIT
NOTE: 1. All typical values are at VCC = 3.3V and Tamb = 25C.
AC SETUP REQUIREMENTS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500; Tamb = -40C to +85C. LIMITS SYMBOL PARAMETER WAVEFORM VCC = 3.3V 0.3V MIN ts(H) ts(L) tn(H) tn(L) ts(H) ts(L) tn(H) tn(L) tW(H) tW(L) Setup time An to CPAB or Bn to CPBA Hold time An to CPAB ro Bn to CPBA Setup time CEAB to CPAB or CEBA to CPBA Hold time CEAB to CPAB or CEBA to CPBA CPAB or CPBA pulse width High or Low 2 2 2 2 1 2.5 2.5 1.5 2.5 0.9 2.4 1.5 2.5 3.3 3.3 TYP1 1 1 -0.5 -0.5 0.3 -0.3 0.3 0 1 1 VCC = 2.7V MIN 2.8 3.0 0.7 2.6 0.8 2.7 0.7 2.6 3.3 3.3 ns ns ns ns ns UNIT
AC WAVEFORMS
VM = 1.5V, VIN = GND to 2.7V
1/fMAX 2.7V
CPBA or CPAB
An, Bn CEAB, CEBA
1.5V
1.5V
1.5V 0V
tw(H) tPHL
tw(L) tPLH VOH 1.5V VOL
CPAB, CPBA
An or Bn
1.5V
NOTE: The shaded areas indicate when the input is permitted to change for predictable output performance.
SV00131
SV00040
Waveform 1. Propagation Delay, Clock Input to Output, Clock Pulse Width, and Maximum Clock Frequency
1998 Feb 19
6
EEEEEEEEEE EEE E EEEEEEEEEE EEE E EEEEEEEEEE EEE E
1.5V 1.5V 1.5V 1.5V 0V ts(H) th(H) ts(L) th(L) 1.5V 1.5V 0V
2.7V
2.7V
Waveform 2. Data Setup and Hold Times
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
2.7V
2.7V
OEAB, OEBA
1.5V
1.5V 0V
OEAB, OEBA
tPHZ
1.5V
1.5V 0V
tPZH
tPZL
tPLZ 3V
An, Bn
1.5V 0V
An, Bn
1.5V
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
VCC 6.0V Open VIN PULSE GENERATOR RT D.U.T. CL RL tTHL (tF) tTLH (tR) VOUT RL GND tW VM 10% 10% 0V tTLH (tR) tTHL (tF) 90% VM 10% tW 0V AMP (V) VM AMP (V)
90% NEGATIVE PULSE
90%
Test Circuit for 3-State Outputs
90% POSITIVE PULSE 10% VM
SWITCH POSITION
TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH SWITCH Open 6V GND
VM = 1.5V Input Pulse Definition
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
INPUT PULSE REQUIREMENTS FAMILY Amplitude 74LVT 2.7V Rep. Rate v10MHz tW tR tF
500ns v2.5ns v2.5ns
SV00092
1998 Feb 19
7
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
SO24: plastic small outline package; 24 leads; body width 7.5 mm
SOT137-1
1998 Feb 19
8
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm
SOT340-1
1998 Feb 19
9
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm
SOT355-1
1998 Feb 19
10
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
NOTES
1998 Feb 19
11
Philips Semiconductors
Product specification
3.3V LVT octal registered transciever (3-State)
74LVT2952
Data sheet status
Data sheet status Objective specification Preliminary specification Product specification Product status Development Qualification Definition [1] This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. 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. 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.
Production
[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. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. print code Document order number: Date of release: 05-96 9397-750-03546
Philips Semiconductors
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