View 74LVC245APW_256922.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

INTEGRATED CIRCUITS
74LVC245A/74LVCH245A Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
Product specification Supersedes data of 1997 Dec 19 IC24 Data Handbook 1998 May 20
Philips Semiconductors
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
FEATURES
* 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic * Supply voltage range of 2.7V to 3.6V * Complies with JEDEC standard no. 8-1A * CMOS low power consumption * Direct interface with TTL levels * High impedance when VCC = 0V * Bushold on all data inputs (74LVCH245A only)
DESCRIPTION
The 74LVC245A/74LVCH245A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3V or 5V devices. In 3-State operation, outputs can handle 5V. These features allow the use of these devices as translators in a mixed 3.3V/5V environment. The 74LVC245A/74LVCH245A is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The '245' 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. The '245' is functionally identical to the '640', but the '640' has true (non-inverting) outputs.
QUICK REFERENCE DATA
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 Notes 1 and 2 CONDITIONS CL = 50pF VCC = 3.3V TYPICAL 3.6 5.0 10.0 33 UNIT ns pF pF pF
NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in mW): PD = CPD x VCC2 x fi + S (CL x VCC2 x fo) where: fi = input frequency in MHz; CL = output load capacity in pF; fo = output frequency in MHz; VCC = supply voltage in V; S (CL x VCC2 x fo) = sum of outputs. 2. The condition is VI = GND to VCC
ORDERING INFORMATION
PACKAGES 20-Pin Plastic Shrink Small Outline (SO) 20-Pin Plastic Shrink Small Outline (SSOP) Type II 20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I 20-Pin Plastic Shrink Small Outline (SO) 20-Pin Plastic Shrink Small Outline (SSOP) Type II 20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I TEMPERATURE RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C OUTSIDE NORTH AMERICA 74LVC245A D 74LVC245A DB 74LVC245A PW 74LVCH245A D 74LVCH245A DB 74LVCH245A PW NORTH AMERICA 74LVC245A D 74LVC245A DB 7LVC245APW DH 74LVCH245A D 74LVCH245A DB LVCH245APW DH PKG. DWG. # SOT163-1 SOT339-1 SOT360-1 SOT163-1 SOT339-1 SOT360-1
1998 May 20
2
853-2044 19419
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
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 B6 B5 A4 6 14 B4 5 15 B3 B2 B1 B0 OE
A0 B0 B1 B2 B3 B4
GND 10
SV00014
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 FUNCTION Direction control Data inputs/outputs Ground (0V)
19
A7
9 11 B7 SV00016
LOGIC SYMBOL (IEEE/IEC)
G3 3EN1 (BA) 1 3EN2 (AB)
Data inputs/outputs Output enable input (active-Low) Positive supply voltage
2 3
1 2 18 17 16 15 14 13 12 11
FUNCTION TABLE
INPUTS OE L L H H L X Z DIR L H X
An
INPUTS/OUTPUTS B0 Inputs B=A Z
4 5 6 7 8 9
A=B lnputs Z
= HIGH voltage level = LOW voltage level = Don't care = High impedance OFF-state
SV00208
1998 May 20
3
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL PARAMETER DC supply voltage (for max. speed performance) VCC VI VO Tamb tr, tf DC supply voltage (for low-voltage applications) DC Input voltage range DC Output voltage range; output HIGH or LOW state DC output voltage range; output 3-State Operating ambient temperature range in free-air Input rise and fall times VCC = 1.2 to 2.7V VCC = 2.7 to 3.6V CONDITIONS MIN 2.7 1.2 0 0 0 -40 0 0 MAX 3.6 V 3.6 5.5 VCC 5.5 +85 20 10 C ns/V V V UNIT
ABSOLUTE MAXIMUM RATINGS1
In accordance with the Absolute Maximum Rating System (IEC 134) Voltages are referenced to GND (ground = 0V) SYMBOL VCC IIK VI IOK VO IO IGND, ICC Tstg PTOT PARAMETER DC supply voltage DC input diode current DC input voltage DC output diode current DC output voltage; output HIGH or LOW state DC output voltage; output 3-State DC output source or sink current DC VCC or GND current Storage temperature range Power dissipation per package - plastic mini-pack (SO) - plastic shrink mini-pack (SSOP and TSSOP) above +70C derate linearly with 8 mW/K above +60C derate linearly with 5.5 mW/K VI t0 Note 2 VO uVCC or VO t 0 Note 2 Note 2 VO = 0 to VCC CONDITIONS RATING -0.5 to +6.5 -50 -0.5 to +6.5 "50 -0.5 to VCC +0.5 -0.5 to 6.5 "50 "100 -65 to +150 500 500 UNIT V mA V mA V mA mA C
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 May 20
4
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V) LIMITS SYMBOL PARAMETER TEST CONDITIONS Temp = -40C to +85C MIN VIH HIGH level Input voltage VCC = 1.2V VCC = 2.7 to 3.6V LOW level Input voltage VCC = 1.2V VCC = 2.7 to 3.6V VCC = 2.7V; VI = VIH or VIL; IO = -12mA VO OH HIGH level output voltage VCC = 3.0V; VI = VIH or VIL; IO = -100A VCC = 3.0V; VI = VIH or VIL; IO = -18mA VCC = 3.0V; VI = VIH or VIL; IO = -24mA VCC = 2.7V; VI = VIH or VIL; IO = 12mA VOL LOW level output voltage VCC = 3.0V; VI = VIH or VIL; IO = 100A VCC = 3.0V; VI = VIH or VIL; IO = 24mA II IOZ Ioff ICC ICC IBHL IBHH IBHLO IBHHO Input leakage current6 current6, 7 VCC = 3.6V; VI = 5.5V or GND VCC = 3.6V; VI = VIH or VIL; VO = 5.5V or GND VCC = 0.0V; VI or VO = 5.5V VCC = 3.6V; VI = VCC or GND; IO = 0 VCC = 2.7V to 3.6V; VI = VCC -0.6V; IO = 0 VCC = 3.0V; VI =0.8V VCC = 3.0V; VI =2.0V VCC = 3.6V VCC = 3.6V 75 -75 500 -500 "0.1 0.1 0.1 0.1 5 - - - - VCC*0.5 VCC*0.2 VCC*0.6 VCC*0.8 0.40 0.20 0.55 "5 "5 "10 10 500 - - - - A A A A A A A A A V VCC V VCC 2.0 GND V 0.8 TYP1 MAX V UNIT
VIL
3-State output OFF-state Power off leakage supply Quiescent supply current
Additional quiescent supply current per input pin Bushold LOW sustaining current2, 3, 4 Bushold HIGH sustaining current2, 3, 4 Bushold LOW overdrive current2, 3, 5 Bushold HIGH overdrive current2, 3, 5
NOTES: 1. All typical values are at VCC = 3.3V and Tamb = 25C. 2. Valid for data inputs of bushold parts (LVCH-A) only. 3. For data inputs only, control inputs do not have a bushold circuit. 4. The specified sustaining current at the data input holds the input below the specified VI level. 5. The specified overdrive current at the data input forces the data input to the opposite logic input state. 6. For bushold parts, the bushold circuit is switched off when VI exceeds VCC allowing 5.5V on the input terminal. 7. For I/O ports the parameter IOZ includes the input leakage current.
1998 May 20
5
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
AC CHARACTERISTICS
GND = 0V; tr = tf v 2.5ns; CL = 50pF; RL = 500; Tamb = -40C to +85C. LIMITS SYMBOL PARAMETER Propagation delay An to Bn; Bn to An 3-State output enable time OE to An; OE to Bn 3-State output disable time OE to An; OE to Bn WAVEFORM VCC = 3.3V 0.3V MIN tPHL tPLH tPZH tPZL tPHZ tPLZ 1, 3 1.5 TYP1 3.6 MAX 6.3 VCC = 2.7V MIN 1.5 MAX 7.3 VCC = 1.2V TYP 16 ns UNIT
2, 3
1.5
5.1
8.5
1.5
9.5
23
ns
2, 3
1.5
4.5
7.0
1.5
8.0
16
ns
NOTE: 1. Unless otherwise stated, all typical values are at VCC = 3.3V and Tamb = 25C.
AC WAVEFORMS
VM = 1.5V at VCC w 2.7V; VM = 0.5 VCC at VCC t 2.7V. VOL and VOH are the typical output voltage drop that occur with the output load. VX = VOL + 0.3V at VCC w 2.7V; VX = VOL + 0.1 VCC at VCC t 2.7V VY = VOH -0.3V at VCC w 2.7V; VY = VOH - 0.1 VCC at VCC t 2.7V
VI INPUT GND VOH OUTPUT VOL tPHL tPLH VM
TEST CIRCUIT
VCC S1 2Test Circuit for 3-State Outputs
VM
SWITCH POSITION TEST
SY00041
SWITCH Open 2VCC t 2.7V 2.7 - 3.6V
VIN VCC 2.7V
tPLH/tPHL tPLZ/tPZL tPHZ/tPZH
Waveform 1. Input (Dn) to output (Qn) propagation delays.
VI nOE INPUT GND VM
DEFINITIONS RL = Load resistor CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to ZOUT of pulse generators.
SW00047
tPLZ tPZL
Waveform 3. Load circuitry for switching times.
VCC Qn OUTPUT LOW-to-OFF OFF-to-LOW VX VOL tPHZ VOH Qn OUTPUT HIGH-to-OFF OFF-to-HIGH GND outputs enabled outputs disabled VY VM tPZH VM
outputs enabled
SW00207
Waveform 2. 3-State enable and disable times.
1998 May 20
6
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1998 May 20
7
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
1998 May 20
8
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
1998 May 20
9
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)
74LVC245A 74LVCH245A
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 9397-750-04503
Philips Semiconductors
yyyy mmm dd 10

▲Up To Search▲

Price & Availability of 74LVC245APW

	To Download 74LVC245APW Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .