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74LV245 Octal bus transceiver (3-State)
Product specification Supersedes data of 1997 Feb 19 IC24 Data Handbook 1998 Apr 20
Philips Semiconductors
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
FEATURES
* Wide operating voltage: 1.0 to 5.5 V * Optimized for low voltage applications: 1.0 to 3.6 V * Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V * Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, * Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, * Output capability: bus driver * ICC category: MSI
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25C; tr = tf 2.5 ns SYMBOL tPHL/tPLH CI CI/O CPD PARAMETER Propagation delay An to Bn; Bn to An Input capacitance Input/output capacitance Power dissipation capacitance per buffer Tamb = 25C Tamb = 25C
DESCRIPTION
The 74LV245 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT245. The 74LV245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The 74LV245 features an output enable (OE) input for easy cascading and a send/receive (DIR) input for direction control. OE controls the outputs so that the buses are effectively isolated.
CONDITIONS CL = 15 pF; VCC = 3.3 V
TYPICAL 7.0 3.5 10
UNIT ns pF pF pF
VCC = 3.3 V VI = GND to VCC, note 1
40
NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in W) VCC2 fi ) (CL VCC2 fo) where: PD = CPD fi = input frequency in MHz; CL = output load capacitance in pF; fo = output frequency in MHz; VCC = supply voltage in V; VCC2 fo) = sum of the outputs. (CL
ORDERING INFORMATION
PACKAGES 20-Pin Plastic DIL 20-Pin Plastic SO 20-Pin Plastic SSOP Type II 20-Pin Plastic TSSOP Type I TEMPERATURE RANGE -40C to +125C -40C to +125C -40C to +125C -40C to +125C OUTSIDE NORTH AMERICA 74LV245 N 74LV245 D 74LV245 DB 74LV245 PW NORTH AMERICA 74LV245 N 74LV245 D 74LV245 DB 74LV245PW DH PKG. DWG. # SOT146-1 SOT163-1 SOT339-1 SOT360-1
PIN DESCRIPTION
PIN NUMBER 1 2, 3, 4, 5, 6, 7, 8, 9 10 18, 17, 16, 15, 14, 13, 12, 11 19 20 SYMBOL DIR A0 to A7 GND B0 to B7 OE VCC Direction Data inputs/outputs Ground (0 V) Data inputs/outputs Output enable input (active LOW) Positive supply voltage FUNCTION
FUNCTION TABLE
INPUTS OE L L H DIR L H X INPUTS/OUTPUT An A=B Inputs Z Bn Inputs B=A Z
NOTES: H = HIGH voltage level L = LOW voltage level X = don't care Z = high impedance OFF-state
1998 Apr 20
2
853-1931 19258
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
PIN CONFIGURATION
DIR A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC OE B0 B1 B2 B3
LOGIC SYMBOL
1 DIR OE A0 B0 3 A1 B1 4 B4 B5 B6 B7 6 A4 B4 14 5 A3 B3 15 A2 B2 16 17 18 19
2
SV00624
7
A5 B5 13
LOGIC SYMBOL (IEEE/IEC)
19 1 G3 3EN1 3EN2
8
A6 B6 12
9
A7 B7 11
SV00625
1 2 2 3 4 5 6 7 8 9 17 16 15 14 13 12 11 18
SV00626
1998 Apr 20
3
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VI VO Tamb PARAMETER DC supply voltage Input voltage Output voltage Operating ambient temperature range in free air See DC and AC characteristics VCC = 1.0V to 2.0V VCC = 2.0V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V to 5.5V CONDITIONS See Note 1 MIN 1.0 0 0 -40 -40 - - - - - - - - TYP. 3.3 - - MAX 5.5 VCC VCC +85 +125 500 200 100 50 UNIT V V V C
tr, tf
Input rise and fall times
ns/V
NOTE: 1. The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V.
ABSOLUTE MAXIMUM RATINGS1, 2
In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0V). SYMBOL VCC "IIK "IOK "IO "IGND, "ICC Tstg PARAMETER DC supply voltage DC input diode current DC output diode current DC output source or sink current - bus driver outputs DC VCC or GND current for types with - bus driver outputs Storage temperature range Power dissipation per package - plastic DIL - plastic mini-pack (SO) - plastic shrink mini-pack (SSOP and TSSOP) for temperature range: -40 to +125C above +70C derate linearly with 12 mW/K above +70C derate linearly with 8 mW/K above +60C derate linearly with 5.5 mW/K VI < -0.5 or VI > VCC + 0.5V VO < -0.5 or VO > VCC + 0.5V -0.5V < VO < VCC + 0.5V CONDITIONS RATING -0.5 to +7.0 20 50 35 UNIT V mA mA mA
70 -65 to +150 750 500 400
mA C
PTOT
mW
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 input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1998 Apr 20
4
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltages are referenced to GND (ground = 0V). LIMITS SYMBOL PARAMETER TEST CONDITIONS MIN VCC = 1.2V VIH HIGH level Input voltage VCC = 2.0V VCC = 2.7 to 3.6V VCC = 4.5 to 5.5V VCC = 1.2V VIL LOW level Input voltage VCC = 2.0V VCC = 2.7 to 3.6V VCC = 4.5 to 5.5 VCC = 1.2V; VI = VIH or VIL; -IO = 100A VOH HIGH l ltt level output voltage out uts voltage; all outputs VCC = 2.0V; VI = VIH or VIL; -IO = 100A VCC = 2.7V; VI = VIH or VIL; -IO = 100A VCC = 3.0V; VI = VIH or VIL; -IO = 100A VCC = 4.5V;VI = VIH or VIL; -IO = 100A VO OH HIGH level output voltage; BUS driver outputs VCC = 3.0V;VI = VIH or VIL; -IO = 8mA VCC = 4.5V;VI = VIH or VIL; -IO = 16mA VCC = 1.2V; VI = VIH or VIL; IO = 100A VOL LOW l ltt level output voltage out uts voltage; all outputs VCC = 2.0V; VI = VIH or VIL; IO = 100A VCC = 2.7V; VI = VIH or VIL; IO = 100A VCC = 3.0V;VI = VIH or VIL; IO = 100A VCC = 4.5V;VI = VIH or VIL; IO = 100A VO OL II IOZ ICC ICC LOW level output voltage; BUS driver outputs Input leakage current 3-State output OFF-state current Quiescent supply current; MSI Additional quiescent supply current VCC = 3.0V;VI = VIH or VIL; IO = 8mA VCC = 4.5V;VI = VIH or VIL; IO = 16mA VCC = 5.5V; VI = VCC or GND VCC = 5.5V; VI = VIH or VIL; VO = VCC or GND VCC = 5.5V; VI = VCC or GND; IO = 0 VCC = 2.7V to 3.6V; VI = VCC -0.6V 1.8 2.5 2.8 4.3 2.40 3.60 1.2 2.0 2.7 3.0 4.5 2.82 4.20 0 0 0 0 0 0.20 0.35 0.2 0.2 0.2 0.2 0.40 0.55 1.0 5 20.0 500 0.2 0.2 0.2 0.2 0.50 V 0.65 1.0 10 160 850 A A A A V 1.8 2.5 2.8 4.3 2.20 V 3.50 V 0.9 1.4 2.0 0.7NOTE: 1. All typical values are measured at Tamb = 25C.
1998 Apr 20
5
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
AC CHARACTERISTICS
GND = 0V; tr = tf 2.5ns; CL = 50pF; RL = 1K SYMBOL PARAMETER WAVEFORM CONDITION VCC(V) 1.2 tPHL/tPLH Pro agation Propagation delay An to Bn; Bn t An to 2.0 Figures 1 2.7 3.0 to 3.6 4.5 to 5.5 1.2 3-State out ut enable time output OE to An; OE t Bn to 2.0 Figures 2 2.7 3.0 to 3.6 4.5 to 5.5 1.2 3-State output disable time OE t An; to OE to Bn 2.0 Figures 2 2.7 3.0 to 3.6 4.5 to 5.5 NOTES: 1. Unless otherwise stated, all typical values are measured at Tamb = 25C 2. Typical values are measured at VCC = 3.3 V. 3. Typical values are measured at VCC = 5.0 V. MIN LIMITS -40 to +85 C TYP1 45 15 11 92 83 55 19 14 102 8.53 65 24 18 142 11.53 32 24 20 16 39 29 24 19 ns 31 23 18 14 39 29 23 18 ns MAX 28 28 19 16 11 34 24 20 14 ns -40 to +125 C MIN MAX UNIT
tPZH/tPZL
tPHZ/tPLZ
AC WAVEFORMS
VM = 1.5 V at VCC 2.7 V and 3.6 V VM = 0.5 V x VCC at VCC < 2.7 V and 4.5 V VOL and VOH are the typical output voltage drop that occur with the output load. VX = VOL + 0.3 V at VCC 2.7 V and 3.6 V VX = VOL + 0.1 x VCC at VCC < 2.7 V and 4.5 V VY = VOH - 0.3 V at VCC 2.7V and 3.6 V VY = VOH - 0.1 x VCC at VCC < 2.7 V and 4.5 V
VI An, Bn INPUT VM OE INPUT GND tPHL tPLH VCC OUTPUT LOW-to-OFF OFF-to-LOW VOL tPHZ VOH OUTPUT HIGH-to-OFF OFF-to-HIGH GND tPLZ tPZL VM VX tPZH VY VM outputs enabled outputs disabled outputs enabled VM
Bn, An OUTPUT
VM
SV00627
Figure 1. Input (An, Bn) to output (Bn, An) propagation delays and the output transition times.
SV00628
Figure 2. 3-State enable and disable times.
1998 Apr 20
6
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
TEST CIRCUIT
VCC 2 * VCC Open GND VO D.U.T. RT CL 50 pF RL = 1k RL = 1k
VI PULSE GENERATOR
Test Circuit for Outputs DEFINITIONS
RL = Load resistor CL = Load capacitance includes jig and probe capacitiance. RT = Termination resistance should be equal to ZOUT of pulse generators.
SWITCH POSITION
TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open 2 * VCC GND VCC < 2.7V 2.7-3.6V w 4.5V VI VCC 2.7V VCC
SV00896
Figure 3. Load circuitry for switching times.
1998 Apr 20
7
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
1998 Apr 20
8
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1998 Apr 20
9
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
1998 Apr 20
10
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
1998 Apr 20
11
Philips Semiconductors
Product specification
Octal bus transceiver (3-State)
74LV245
DEFINITIONS
Data Sheet Identification
Objective Specification
Product Status
Formative or in Design
Definition
This data sheet contains the design target or goal specifications for product development. Specifications 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 changes 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.
Preliminary Specification
Preproduction Product
Product Specification
Full Production
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 (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 9397-750-04438
Philips Semiconductors
1998 Apr 20 12

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