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SN74ALS642A-1DWRE4

SN74ALS642A-1DWRE4

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    SOIC20_300MIL

  • 描述:

    IC TXRX INVERT 5.5V 20SOIC

  • 数据手册
  • 价格&库存
SN74ALS642A-1DWRE4 数据手册
              SDAS300 − MARCH 1995 • • • DW OR N PACKAGE (TOP VIEW) Bidirectional Bus Transceivers in High-Density 20-Pin Packages Choice of True or Inverting Logic Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs DEVICE LOGIC SN74ALS641A, SN74AS641 True SN74ALS642A DIR A1 A2 A3 A4 A5 A6 A7 A8 GND Inverting description 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 These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable (OE) input disables the device so that the buses are effectively isolated. The -1 versions of the SN74ALS641A and SN74ALS642A are identical to the standard versions, except that the recommended maximum IOL is increased to 48 mA in the -1 versions. The SN74ALS641A, SN74ALS642A, and SN74AS641 are characterized for operation from 0°C to 70°C. FUNCTION TABLE INPUTS OE DIR OPERATION SN74ALS641A SN74AS641 SN74ALS642A L L B data to A bus B data to A bus L H A data to B bus A data to B bus H X Isolation Isolation Copyright  1995, Texas Instruments Incorporated      !" # $%&" !#  '%()$!" *!"&+ *%$"# $ " #'&$$!"# '& ",& "&#  &-!# #"%&"# #"!*!* .!!"/+ *%$" '$&##0 *&# " &$&##!)/ $)%*& "&#"0  !)) '!!&"&#+ • DALLAS, TEXAS 75265 • HOUSTON, TEXAS 77251−1443 POST OFFICE BOX 655303 POST OFFICE BOX 1443 1               SDAS300 − MARCH 1995 logic symbols† SN74ALS641A, SN74AS641 OE DIR A1 19 1 2 SN74ALS642A G3 OE 3 EN1 [BA] 3 EN2 [AB] DIR 18 1 B1 A1 19 1 2 2 A2 A3 A4 A5 A6 A7 A8 3 EN1 [BA] 3 EN2 [AB] 18 1 B1 2 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B2 A2 B3 A3 B4 A4 B5 A5 B6 A6 B7 A7 B8 A8 3 17 4 16 5 15 6 14 7 13 8 12 9 11 † These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2 G3 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • B2 B3 B4 B5 B6 B7 B8               SDAS300 − MARCH 1995 logic diagrams (positive logic) SN74ALS641A, SN74AS641 OE DIR A1 SN74ALS642A 19 OE 1 DIR 18 2 B1 A1 To Seven Other Transceivers 19 1 18 2 B1 To Seven Other Transceivers absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI: All inputs and I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN74ALS641A, SN74ALS642A . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 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. recommended operating conditions SN74ALS641A SN74ALS642A UNIT MIN NOM MAX 4.5 5 5.5 VCC VIH Supply voltage VIL VOH Low-level input voltage 0.8 V High-level output voltage 5.5 V Low-level output current 24 48‡ mA 70 °C IOL High-level input voltage 2 TA Operating free-air temperature ‡ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 0 V V 3               SDAS300 − MARCH 1995 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN74ALS641A SN74ALS642A TEST CONDITIONS MIN VIK IOH VOL VCC = 4.5 V, VCC = 4.5 V, II = − 18 mA VOH = 5.5 V VCC = 4.5 V IOL = 12 mA IOL = 24 mA IOL = 48 mA‡ II Control inputs VCC = 5.5 V, VI = 7 V IIH Control inputs A or B ports§ VCC = 5.5 V, VI = 2.7 V IIL Control inputs A or B ports§ VCC = 5.5 V, VI = 0.4 V SN74ALS641A VCC = 5.5 V SN74ALS642A VCC = 5.5 V TYP† UNIT MAX −1.5 V 0.1 mA 0.25 0.4 0.35 0.5 0.35 0.5 0.1 20 20 V mA A µA −0.1 ICC −0.1 Outputs high 25 37 Outputs low 33 47 Outputs high 8 15 18 28 Outputs low † All typical values are at VCC = 5 V, TA = 25°C. ‡ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V § For I/O ports, the parameters IIH and IIL include the off-state output current. mA mA switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A or B B or A tPLH tPHL OE A or B tPLH tPHL DIR A or B VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 680 Ω, TA = MIN to MAX¶ SN74ALS641A SN74ALS642A MIN MAX MIN MAX 5 25 10 30 3 18 5 22 8 30 10 30 8 30 15 38 8 32 10 30 8 32 15 38 ¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • UNIT ns ns ns               SDAS300 − MARCH 1995 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI: All inputs and I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN74AS641 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 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. recommended operating conditions SN74AS641 MIN NOM MAX 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL VOH Low-level input voltage 0.8 V High-level output voltage 5.5 V IOL TA Low-level output current 64 mA 70 °C High-level input voltage 2 Operating free-air temperature V V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK IOH VCC = 4.5 V, VCC = 4.5 V, II = − 18 mA VOH = 5.5 V VOL VCC = 4.5 V, IOL = 64 mA VI = 7 V Control inputs II A or B ports VCC = 5.5 V IIH Control inputs A or B ports§ VCC = 5.5 V, VI = 2.7 V IIL Control inputs A or B ports§ VCC = 5.5 V, VI = 0.4 V ICC SN74AS641 TYP‡ MAX MIN 0.35 UNIT −1.2 V 0.1 mA 0.55 V 0.1 VI = 5.5 V 0.1 20 70 mA A µA −0.5 VCC = 5.5 V −0.75 Outputs high 50 82 Outputs low 84 136 mA mA ‡ All typical values are at VCC = 5 V, TA = 25°C. § For I/O ports, the parameters IIH and IIL include the off-state output current. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 5               SDAS300 − MARCH 1995 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 680 Ω, TA = MIN to MAX† UNIT SN74AS641 MIN tPLH tPHL A or B B or A tPLH tPHL OE A or B tPLH tPHL DIR A or B 5 21 1 7.5 5 21 1 9 5 22 1 10 † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 6 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • MAX ns ns ns               SDAS300 − MARCH 1995 PARAMETER MEASUREMENT INFORMATION SERIES 54ALS/74ALS AND 54AS/74AS DEVICES 7V RL = R1 = R2 VCC S1 RL R1 Test Point From Output Under Test CL (see Note A) From Output Under Test RL Test Point CL (see Note A) CL (see Note A) LOAD CIRCUIT FOR BI-STATE TOTEM-POLE OUTPUTS LOAD CIRCUIT FOR OPEN-COLLECTOR OUTPUTS 3.5 V Timing Input Test Point From Output Under Test LOAD CIRCUIT FOR 3-STATE OUTPUTS 3.5 V High-Level Pulse 1.3 V R2 1.3 V 1.3 V 0.3 V 0.3 V tsu Data Input tw th 3.5 V 1.3 V 3.5 V Low-Level Pulse 1.3 V 0.3 V 1.3 V 0.3 V VOLTAGE WAVEFORMS PULSE DURATIONS VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3.5 V Output Control (low-level enabling) 1.3 V 1.3 V 0.3 V tPZL Waveform 1 S1 Closed (see Note B) tPLZ 3.5 V Input tPZH 1.3 V 0.3 V tPHL tPLH VOH In-Phase Output VOL 0.3 V 1.3 V 1.3 V VOL tPLH tPHL VOH 1.3 V 1.3 V [3.5 V 1.3 V tPHZ Waveform 2 S1 Open (see Note B) 1.3 V VOH Out-of-Phase Output (see Note C) 0.3 V [0 V 1.3 V 1.3 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS 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. When measuring propagation delay items of 3-state outputs, switch S1 is open. D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%. E. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuits and Voltage Waveforms • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 7 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) SN74ALS641A-1DW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS641A-1 SN74ALS641A-1DWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS641A-1 SN74ALS641A-1N ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS641A-1N SN74ALS641A-1NSR ACTIVE SO NS 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS641A-1 SN74ALS641ADW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS641A SN74ALS641ADWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS641A SN74ALS641AN ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS641AN SN74ALS641ANSR ACTIVE SO NS 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS641A SN74ALS642A-1DW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS642A-1 SN74ALS642A-1N ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS642A-1N SN74ALS642A-1NSR ACTIVE SO NS 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS642A-1 SN74AS641DW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 AS641 SN74AS641N ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74AS641N (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. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
SN74ALS642A-1DWRE4 价格&库存

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