SN74CB3T3257PWRG4

SN74CBT3257 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER SCDS017M − MAY 1995 − REVISED JANUARY 2004 D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels D, DB, DBQ, OR PW PACKAGE (TOP VIEW) 15 3 14 4 13 5 12 6 11 7 10 8 9 1B1 1B2 1A 2B1 2B2 2A VCC 2 VCC OE 4B1 4B2 4A 3B1 3B2 3A 1 16 15 OE 14 4B1 2 3 13 4B2 12 4A 4 5 11 3B1 10 3B2 6 7 8 9 3A 16 S 1 GND S 1B1 1B2 1A 2B1 2B2 2A GND RGY PACKAGE (TOP VIEW) description/ordering information The SN74CBT3257 is a 4-bit 1-of-2 high-speed TTL-compatible FET multiplexer/demultiplexer. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. Output-enable (OE) and select-control (S) inputs select the appropriate B1 and B2 outputs for the A-input data. ORDERING INFORMATION QFN − RGY SN74CBT3257RGYR Tube SN74CBT3257D Tape and reel SN74CBT3257DR SSOP − DB Tape and reel SN74CBT3257DBR CU257 SSOP (QSOP) − DBQ Tape and reel SN74CBT3257DBQR CU257 Tube SN74CBT3257PW Tape and reel SN74CBT3257PWR TSSOP − PW † TOP-SIDE MARKING Tape and reel SOIC − D −40°C 40 C to 85°C 85 C ORDERABLE PART NUMBER PACKAGE† TA CU257 CBT3257 CU257 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS OE S FUNCTION L L A port = B1 port L H A port = B2 port H X Disconnect 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 © 2004, Texas Instruments Incorporated PRODUCTION DATA information is 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 SN74CBT3257 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER SCDS017M − MAY 1995 − REVISED JANUARY 2004 logic diagram (positive logic) 2 4 1B1 1A 3 1B2 2A 7 5 2B1 6 2B2 11 9 3A 10 4A 14 12 13 S 1 15 OE 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3B1 3B2 4B1 4B2 SN74CBT3257 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER SCDS017M − MAY 1995 − REVISED JANUARY 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Continuous channel current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Input clamp current, IK (VI/O < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W (see Note 2): DBQ package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90°C/W (see Note 2): PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W (see Note 3): RGY package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39°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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. 3. The package thermal impedance is calculated in accordance with JESD 51-5. recommended operating conditions (see Note 4) MIN MAX VCC Supply voltage 4 5.5 VIH High-level control input voltage 2 VIL Low-level control input voltage TA Operating free-air temperature −40 UNIT V V 0.8 V 85 °C NOTE 4: 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VCC = 4.5 V, II = −18 mA II VCC = 5.5 V, VI = 5.5 V or GND VCC = 5.5 V, IO = 0, VI = VCC or GND Control inputs VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND Control inputs VI = 3 V or 0 ICC ΔICC § Ci B port TYP‡ MAX UNIT −1.2 V ±1 μA 3 μA 2.5 mA 3.5 A port Cio(OFF) MIN pF 6.5 VO = 3 V or 0 0, OE = VCC VCC = 4 V, TYP at VCC = 4 V VI = 2.4 V, ron¶ VCC = 4.5 V VI = 0 VI = 2.4 V, pF 4 II = 15 mA 14 20 II = 64 mA 5 7 II = 30 mA 5 7 II = 15 mA 10 15 Ω ‡ All typical values are at VCC = 5 V (unless otherwise noted), TA = 25°C. This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. ¶ Measured by the voltage drop between the A and the B terminals at the indicated current through the switch. On-state resistance is determined by the lowest voltage of the two (A or B) terminals. § POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN74CBT3257 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER SCDS017M − MAY 1995 − REVISED JANUARY 2004 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) VCC = 5 V ± 0.5 V MIN MIN TO (OUTPUT) tpd† A or B B or A 0.35 0.25 ns tpd S A 5.5 1.6 5 ns S B 5.7 1.6 5.2 OE A or B 5.6 1.8 5.1 S B 5.2 1 5 OE A or B 5.5 2.2 5.5 ten tdis † VCC = 4 V FROM (INPUT) PARAMETER MAX UNIT MAX ns ns The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when driven by an ideal voltage source (zero output impedance). PARAMETER MEASUREMENT INFORMATION 7V 500 Ω From Output Under Test S1 Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 7V Open 3V Output Control LOAD CIRCUIT 1.5 V 1.5 V 0V tPZL 3V Input 1.5 V 1.5 V 0V tPLH tPHL 1.5 V tPLZ 3.5 V 1.5 V 1.5 V VOL Output Waveform 2 S1 at Open (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOL + 0.3 V VOL tPZH VOH Output Output Waveform 1 S1 at 7 V (see Note B) tPHZ 1.5 V VOH VOH − 0.3 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, tr ≤ 2.5 ns, tf ≤ 2.5 ns. 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 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 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) Samples (4/5) (6) SN74CBT3257D ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 CBT3257 Samples SN74CBT3257DBQR ACTIVE SSOP DBQ 16 2500 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 CU257 Samples SN74CBT3257DBR ACTIVE SSOP DB 16 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 CU257 Samples SN74CBT3257DG4 ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 CBT3257 Samples SN74CBT3257DR ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 CBT3257 Samples SN74CBT3257PW ACTIVE TSSOP PW 16 90 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 CU257 Samples SN74CBT3257PWR ACTIVE TSSOP PW 16 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 CU257 Samples SN74CBT3257RGYR ACTIVE VQFN RGY 16 3000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 CU257 Samples (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