SN74ALVCH245DWR

SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS www.ti.com SCES119G – JULY 1997 – REVISED SEPTEMBER 2004 FEATURES • • • • • DGV, DW, NS, OR PW PACKAGE (TOP VIEW) Operates From 1.65 V to 3.6 V Max tpd of 3.4 ns at 3.3 V ±24-mA Output Drive at 3.3 V Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II DIR A1 A2 A3 A4 A5 A6 A7 A8 GND DESCRIPTION/ORDERING INFORMATION This octal bus transceiver is designed for 1.65-V to 3.6-V VCC operation. 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC OE B1 B2 B3 B4 B5 B6 B7 B8 The SN74ALVCH245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. ORDERING INFORMATION PACKAGE (1) TA SOIC - DW -40°C to 85°C SOP - NS TSSOP - PW TVSOP - DGV (1) ORDERABLE PART NUMBER Tube SN74ALVCH245DW Tape and reel SN74ALVCH245DWR Tape and reel SN74ALVCH245NSR Tube SN74ALVCH245PW Tape and reel SN74ALVCH245PWR Tape and reel SN74ALVCH245DGVR TOP-SIDE MARKING ALVCH245 ALVCH245 VB245 VB245 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1997–2004, Texas Instruments Incorporated SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS www.ti.com SCES119G – JULY 1997 – REVISED SEPTEMBER 2004 LOGIC DIAGRAM (POSITIVE LOGIC) DIR 1 19 A1 OE 2 18 B1 To Seven Other Channels ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VCC Supply voltage range MIN MAX -0.5 4.6 Except I/O ports (2) -0.5 4.6 I/O ports (2) (3) -0.5 VCC + 0.5 -0.5 VCC + 0.5 UNIT V VI Input voltage range VO Output voltage range (2) (3) IIK Input clamp current VI < 0 -50 mA IOK Output clamp current VO < 0 -50 mA IO Continuous output current ±50 mA ±100 mA Continuous current through VCC or GND θJA Package thermal impedance (4) Tstg Storage temperature range DGV package 92 DW package 58 NS package 60 PW package (1) (2) (3) (4) 2 V V °C/W 83 -65 150 °C Stresses beyond those listed under "absolute maximum ratings" 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. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. This value is limited to 4.6 V maximum. The package thermal impedance is calculated in accordance with JESD 51-7. SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS www.ti.com SCES119G – JULY 1997 – REVISED SEPTEMBER 2004 RECOMMENDED OPERATING CONDITIONS (1) VCC Supply voltage VCC = 1.65 V to 1.95 V VIH High-level input voltage MIN MAX 1.65 3.6 Low-level input voltage VI Input voltage VO Output voltage IOH High-level output current IOL Low-level output current ∆t/∆v Input transition rise or fall rate TA Operating free-air temperature (1) V 0.65 × VCC VCC = 2.3 V to 2.7 V 1.7 VCC = 2.7 V to 3.6 V 2 V 0.35 × VCC VCC = 1.65 V to 1.95 V VIL UNIT VCC = 2.3 V to 2.7 V 0.7 VCC = 2.7 V to 3.6 V 0.8 V 0 VCC V 0 VCC V VCC = 1.65 V -4 VCC = 2.3 V -12 VCC = 2.7 V -12 VCC = 3 V -24 VCC = 1.65 V 4 VCC = 2.3 V 12 VCC = 2.7 V 12 VCC = 3 V 24 -40 mA mA 10 ns/V 85 °C All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. 3 SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS www.ti.com SCES119G – JULY 1997 – REVISED SEPTEMBER 2004 ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC IOH = -100 µA 1.65 V to 3.6 V 1.65 V IOH = -6 mA 2.3 V 2 2.3 V 1.7 2.7 V 2.2 3V 2.4 IOH = -24 mA 3V 2 IOL = 100 µA IOH = -12 mA II(hold) V 1.65 V to 3.6 V 0.2 1.65 V 0.45 IOL = 6 mA 2.3 V 0.4 2.3 V 0.7 IOL = 24 mA 2.7 V 0.4 3V 0.55 ±5 VI = VCC or GND 3.6 V VI = 0.58 V 1.65 V 25 VI = 1.07 V 1.65 V -25 VI = 0.7 V 2.3 V 45 VI = 1.7 V 2.3 V -45 VI = 0.8 V 3V 75 3V -75 VI = 2 V VI = 0 to 3.6 V (2) IOZ (3) VO = VCC or GND ICC VI = VCC or GND, IO = 0 ∆ICC One input at VCC - 0.6 V, Other inputs at VCC or GND UNIT 1.2 IOL = 4 mA IOL = 12 mA II TYP (1) MAX VCC - 0.2 IOH = -4 mA VOH VOL MIN V µA µA 3.6 V ±500 3.6 V ±10 µA 3.6 V 10 µA 3 V to 3.6 V 750 µA Ci Control inputs VI = VCC or GND 3.3 V 4.5 pF Cio A or B ports VO = VCC or GND 3.3 V 12 pF (1) (2) All typical values are at VCC = 3.3 V, TA = 25°C. This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another. For I/O ports, the parameter IOZ includes the input leakage current. (3) SWITCHING CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) tpd A or B ten tdis PARAMETER VCC = 1.8 V ± 0.15 V VCC = 2.5 V ± 0.2 V VCC = 2.7 V MIN MAX MIN MAX B or A 1.5 6 1 OE A or B 3.4 8.6 OE A or B 2.7 8 MIN VCC = 3.3 V ± 0.3 V UNIT MAX MIN MAX 3.5 3.6 1.3 3.4 ns 2 6 6.3 1.6 5.5 ns 1 4.8 5.3 1.7 5.5 ns OPERATING CHARACTERISTICS TA = 25°C PARAMETER Cpd 4 Power dissipation capacitance per transceiver TEST CONDITIONS Outputs enabled Outputs disabled CL = 0, f = 10 MHz VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V TYP TYP TYP 25 28 31 0 0 0 UNIT pF SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS www.ti.com SCES119G – JULY 1997 – REVISED SEPTEMBER 2004 PARAMETER MEASUREMENT INFORMATION VLOAD S1 RL From Output Under Test Open GND CL (see Note A) RL TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open VLOAD GND LOAD CIRCUIT INPUT VCC 1.8 V ± 0.15 V 2.5 V ± 0.2 V 2.7 V 3.3 V ± 0.3 V VI tr/tf VCC VCC 2.7 V 2.7 V ≤2 ns ≤2 ns ≤2.5 ns ≤2.5 ns VM VLOAD CL RL V∆ VCC/2 VCC/2 1.5 V 1.5 V 2 × VCC 2 × VCC 6V 6V 30 pF 30 pF 50 pF 50 pF 1 kΩ 500 Ω 500 Ω 500 Ω 0.15 V 0.15 V 0.3 V 0.3 V tw VI Timing Input VM VM VM 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VM VM 0V tPLH Output Control (low-level enabling) tPLZ VLOAD/2 VM tPZH VOH VM VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VM 0V Output Waveform 1 S1 at VLOAD (see Note B) tPHL VM VI VM tPZL VI Input VOLTAGE WAVEFORMS PULSE DURATION th VI Data Input VM 0V 0V tsu Output VI VM Input Output Waveform 2 S1 at GND (see Note B) VOL + V∆ VOL tPHZ VOH VM VOH − V∆ 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω. D. The outputs are measured one at a time, with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. H. All parameters and waveforms are not applicable to all devices. Figure 1. Load Circuit and Voltage Waveforms 5 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) SN74ALVCH245DGVR ACTIVE TVSOP DGV 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 VB245 SN74ALVCH245DW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 ALVCH245 SN74ALVCH245DWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 ALVCH245 SN74ALVCH245PW ACTIVE TSSOP PW 20 70 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 VB245 SN74ALVCH245PWR ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 VB245 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of