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INTEGRATED CIRCUITS
74LVT2245 3.3V Octal transceiver with 30 termination resistors (3-State)
Product specification Supersedes data of 1996 Mar 11 IC23 Data Handbook 1998 Feb 19
Philips Semiconductors
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
FEATURES
* 30 output termination resistors * Octal bidirectional bus interface * 3-State buffers * Output capability: +12mA/-12mA * 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 * Power-up 3-State * No bus current loading when output is tied to 5V bus * 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 LVT2245 is a high-performance BiCMOS product designed for VCC operation at 3.3V. This device is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The control function implementation minimizes external timing requirements. The device features an Output Enable (OE) input for easy cascading and a Direction (DIR) input for direction control. The 74LVT2245 is designed with 30 series resistance in both the High and Low states of the output. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters.
QUICK REFERENCE DATA
SYMBOL tPLH tPHL CIN CI/O ICCZ PARAMETER Propagation delay An to Bn or Bn to An Input capacitance DIR, OE 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 3.2 3.1 4 10 0.13 UNIT ns pF pF mA
ORDERING INFORMATION
PACKAGES 20-Pin Plastic SO 20-Pin Plastic SSOP 20-Pin Plastic TSSOP TEMPERATURE RANGE -40C to +85C -40C to +85C -40C to +85C OUTSIDE NORTH AMERICA 74LVT2245 D 74LVT2245 DB 74LVT2245 PW NORTH AMERICA 74LVT2245 D 74LVT2245 DB 7LVT2245PW DH DWG NUMBER SOT163-1 SOT339-1 SOT360-1
PIN CONFIGURATION
DIR A0 A1 A2 A3 A4 A5 A6 A7 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 VCC OE
LOGIC SYMBOL
1 DIR 19 2 18 A1 3 17 A2 4 16 A3 B5 B6 B7 A5 7 13 A6 8 12 A7 9 11 B7 SV00016 B6 B5 A4 6 14 B4 5 15 B3 B2 B1 B0 OE
A0 B0 B1 B2 B3 B4
GND 10
SV00014
1998 Feb 19
2
853-1828 18985
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
LOGIC SYMBOL (IEEE/IEC)
19 G3 3 EN1 (BA) 1 3 EN2 (AB) 18 1 2 3 4 5 6 7 8 9 17 16 15 14 13 12 11
FUNCTION TABLE
INPUTS OEn L L H L X Z = = = = DIR L H INPUTS/OUTPUTS An An= Bn Inputs Z Bn Inputs Bn =An Z
2
H X High voltage level Low voltage level Don't care High impedance "Off " state
SCHEMATIC OF EACH OUTPUT
VCC VCC
25
SV00015
25
PIN DESCRIPTION
PIN NUMBER 1 2, 3, 4, 5, 6, 7, 8, 9 18, 17, 16, 15, 14, 13, 12, 11 19 10 20 SYMBOL DIR A0 - A7 B0 - B7 OE GND VCC NAME AND FUNCTION Direction control input
SV00102
Data inputs/outputs (A side) Data inputs/outputs (B side) Output enable input (active-Low) Ground (0V) Positive supply voltage
ABSOLUTE MAXIMUM RATINGS1,2
SYMBOL VCC IIK VI IOK VOUT IOUT Tstg PARAMETER DC supply voltage DC input diode current DC input voltage3 DC output diode current DC output voltage3 VO < 0 Output in Off or High state Output in Low state DC output current Output in High state Storage temperature range -64 -65 to +150 C VI < 0 CONDITIONS RATING -0.5 to +4.6 -50 -0.5 to +7.0 -50 -0.5 to +7.0 128 mA UNIT V mA V mA V
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.
1998 Feb 19
3
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VI VIH VIL IOH IOL t/v Tamb DC supply voltage Input voltage High-level input voltage Input voltage High-level output current Low-level output current Input transition rise or fall rate; Outputs enabled Operating free-air temperature range -40 PARAMETER LIMITS MIN 2.7 0 2.0 0.8 -12 12 10 +85 MAX 3.6 5.5 UNIT V V V V mA mA ns/V C
DC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL VIK VOH VOL PARAMETER Input clamp voltage High-level output voltage Low-level output voltage TEST CONDITIONS VCC = 2.7V; IIK = -18mA VCC = 3.0V; IOH = -12mA VCC = 3.0V; IOL = 12mA VCC = 0 or 3.6V; VI = 5.5V VCC = 3.6V; VI = VCC or GND 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 ouptut in the High state when VO > VCC Power up/down 3-State output current3 Quiescent supply current Additional supply current per input pin3 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 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 = 05 VCC = 3V to 3.6V; One input at VCC-0.6V, Other inputs at VCC or GND 75 -75 500 60 15 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 ins 1 0.1 1 0.1 -1 1 150 -150 A 2.0 Temp = -40C to +85C MIN TYP1 -0.9 2.2 0.8 10 1 20 1 -5 100 A A MAX -1.2 V V 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 the specified voltage level other than VCC or GND 3. This parameter is valid for any VCC between 0V and 1.2V with a transition time of up to 10msec. From VCC = 1.2V 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. ICCZ is measured with outputs pulled up to VCC or down to GND 6. This is the bus hold overdrive current required to force the input to the opposite logic state.
1998 Feb 19
4
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500; Tamb = -40C to +85C. LIMITS SYMBOL PARAMETER WAVEFORM MIN tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay An to Bn or Bn to An Output enable time to High and Low level Output disable time from High and Low Level 1 2 2 1.0 1.0 1.1 1.5 2.2 2.0 VCC = 3.3V +0.3V TYP 3.2 3.1 4.5 4.3 3.7 3.6 MAX 4.6 4.5 7.0 6.5 5.2 5.0 VCC = 2.7V MAX 5.3 4.9 9.1 7.6 5.6 5.0 ns ns ns UNIT
NOTE: 1. All typical values are at VCC = 3.3V and Tamb = 25C.
AC WAVEFORMS
VM = 1.5V, VIN = GND to 2.7V
2.7V OE INPUT An or Bn INPUT VM VM tPZL tPHL tPLH An or Bn OUTPUT Bn or An OUTPUT VM VM tPZH tPLZ 1.5V 1.5V 0V 3.0V
1.5V VOL + 0.3V tPHZ VOL VOH
Bn or An OUTPUT
1.5V
VOH - 0.3V
SA00192
0V
Waveform 1. Input (An or Bn) to Output (Bn or An) Propagation Delays
SV00106
Waveform 2. 3-State Output Enable and Disable Times
1998 Feb 19
5
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
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
6
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1998 Feb 19
7
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
1998 Feb 19
8
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
1998 Feb 19
9
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30 termination resistors (3-State)
74LVT2245
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 9397-750-03533
Philips Semiconductors
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