SN74HCT623DW

SN54HCT623, SN74HCT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS016C – MARCH 1984 – REVISED MARCH 2003 Operating Voltage Range of 4.5 V to 5.5 V Low Power Consumption, 80-µA Max ICC Typical tpd = 11 ns ±6-mA Output Drive at 5 V Low Input Current of 1 µA Max 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 A2 A1 OEAB VCC 20 2 VCC OEBA B1 B2 B3 B4 B5 B6 B7 B8 A3 A4 A5 A6 A7 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 B1 B2 B3 B4 B5 A8 GND B8 B7 B6 1 Inputs Are TTL-Voltage Compatible Lock Bus-Latch Capability True Logic High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads SN54HCT623 . . . FK PACKAGE (TOP VIEW) SN54HCT623 . . . J OR W PACKAGE SN74HCT623 . . . DW OR N PACKAGE (TOP VIEW) OEAB A1 A2 A3 A4 A5 A6 A7 A8 GND D D D D OEBA D D D D D description/ordering information These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation allows for maximum flexibility in timing. The ’HCT623 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic levels at the output-enable (OEAB and OEBA) inputs. The output-enable inputs disable the device so that the buses are effectively isolated. The dual-enable configuration gives the transceivers the capability to store data by simultaneously enabling OEAB and OEBA. Each output reinforces its input in this transceiver configuration. When both OEAB and OEBA are enabled and all other data sources to the two sets of bus lines are in the high-impedance state, both sets of bus lines (16 total) remain at their last states. The 8-bit codes appearing on the two sets of buses are identical. To ensure the high-impedance state during power up or power down, OEBA should be tied to VCC through a pullup resistor and OEAB should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sinking/current-sourcing capability of the driver. ORDERING INFORMATION PACKAGE† TA –40°C 40°C to 85°C –55°C to 125°C ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP – N Tube SN74HCT623N SN74HCT623N SOIC – DW Tube SN74HCT623DW HCT623 CDIP – J Tube SNJ54HCT623J SNJ54HCT623J CFP – W Tube SNJ54HCT623W SNJ54HCT623W LCCC – FK Tube SNJ54HCT623FK SNJ54HCT623FK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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. Copyright  2003, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54HCT623, SN74HCT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS016C – MARCH 1984 – REVISED MARCH 2003 FUNCTION TABLE INPUTS OEBA OEAB OPERATION L L B data to A bus H H A data to B bus H L Isolation H B data to A bus, A data to B bus L logic diagram (positive logic) OEBA OEAB A1 19 1 2 18 B1 To Seven Other Transceivers absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA Package thermal impedance, θJA (see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54HCT623, SN74HCT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS016C – MARCH 1984 – REVISED MARCH 2003 recommended operating conditions (see Note 3) SN54HCT623 NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 VCC VIH Supply voltage VIL VI Low-level input voltage Input voltage 0 VO tt Output voltage 0 High-level input voltage VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V SN74HCT623 MIN 2 2 Input transition (rise and fall) time V V 0.8 VCC VCC UNIT 0 0 500 0.8 V VCC VCC V 500 ns V TA Operating free-air temperature –55 125 –40 85 °C NOTE 3: All unused 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC VOH VI = VIH or VIL IOH = –20 µA IOH = –6 mA 45V 4.5 VOL VI = VIH or VIL IOL = 20 µA IOL = 6 mA 45V 4.5 OEAB or OEBA II IOZ ICC A or B SN54HCT623 MIN MAX SN74HCT623 MIN 4.4 4.499 4.4 4.4 3.98 4.3 3.7 3.84 MAX UNIT V 0.001 0.1 0.1 0.1 0.17 0.26 0.4 0.33 V 5.5 V ±0.1 ±100 ±1000 ±1000 nA VO = VCC or GND VI = VCC or 0, 5.5 V ±0.01 ±0.5 ±10 ±5 µA 8 160 80 µA 1.4 2.4 3 2.9 mA 3 10 10 10 pF 5.5 V 5.5 V OEAB or OEBA Ci TA = 25°C TYP MAX VI = VCC or 0 IO = 0 One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC ∆ICC† MIN 4.5 V to 5.5 V † This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC. switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tpd d A or B B or A ten OEBA A tdis di OEBA A ten OEAB B tdis di OEAB B tt A or B VCC MIN TA = 25°C TYP MAX SN54HCT623 MIN MAX SN74HCT623 MIN MAX 4.5 V 15 22 33 28 5.5 V 13 20 30 25 4.5 V 30 42 63 53 5.5 V 23 38 57 48 4.5 V 18 30 45 38 5.5 V 16 28 42 35 4.5 V 30 42 63 53 5.5 V 23 38 57 48 4.5 V 18 30 45 38 5.5 V 16 28 42 35 4.5 V 9 12 18 15 5.5 V 8 11 16 14 UNIT ns ns ns ns ns ns PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54HCT623, SN74HCT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS016C – MARCH 1984 – REVISED MARCH 2003 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tpd d A or B B or A OEBA A ten OEAB B tt A or B VCC MIN TA = 25°C TYP MAX SN54HCT623 MIN MAX SN74HCT623 MIN MAX 4.5 V 18 38 58 47 5.5 V 11 34 52 42 4.5 V 36 59 89 74 5.5 V 30 53 80 67 4.5 V 36 59 89 74 5.5 V 30 53 80 67 4.5 V 17 42 63 53 5.5 V 14 38 57 48 UNIT ns ns ns operating characteristics, TA = 25°C PARAMETER Cpd TEST CONDITIONS Power dissipation capacitance per transceiver No load PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TYP 40 UNIT pF SN54HCT623, SN74HCT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS016C – MARCH 1984 – REVISED MARCH 2003 PARAMETER MEASUREMENT INFORMATION VCC From Output Under Test CL (see Note A) PARAMETER S1 Test Point tPZH ten RL S2 1 kΩ tPZL tPHZ tdis S2 50 pF or 150 pF Open Closed Closed Open 1 kΩ –– LOAD CIRCUIT 2.7 V S1 50 pF tPLZ tpd or tt Input 1.3 V 0.3 V CL RL 2.7 V 50 pF or 150 pF Open Closed Closed Open Open Open 3V 1.3 V 0.3 V 0 V tr tf VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES 3V Input 1.3 V 1.3 V 0V tPLH In-Phase Output 1.3 V 10% tPHL 90% 90% tr tPHL Out-ofPhase Output 90% VOH 1.3 V 10% V OL tf tPLH 1.3 V 10% 1.3 V 10% tf Output Control (Low-Level Enabling) 3V 1.3 V 1.3 V 0V tPZL Output Waveform 1 (See Note B) tPLZ ≈VCC 1.3 V 10% tPZH 90% VOH VOL tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES Output Waveform 2 (See Note B) VOL tPHZ 1.3 V 90% VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS NOTES: A. CL includes probe and test-fixture 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. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. D. The outputs are measured one at a time with one input 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. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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) (3) Device Marking (4/5) (6) SN74HCT623N ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type -40 to 85 SN74HCT623N (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