PI3B16245_04 PERICOM | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Features

  • Near-Zero propagation delay
  • 5-ohm switches connect inputs to outputs
  • Fast Switching Speed - 4ns max.
  • Pin compatible with 74 series 16245
  • Operating V CC Range: 3.0V to 3.6V
  • Industrial operating temperature: –40°C to +85°C
  • Packaging (Pb-free & Green available): – 48-pin 240-mil wide thin plastic TSSOP (A) – 48-pin 300-mil wide plastic SSOP (V) PI3B16245 3.3V , 16-Bit, 2-Port NanoSwitch™ Block Diagram Pin Configuration

Description

Pericom Semiconductor’s PI3B16245 is a 3.3 volt, hot-insertion, 16- bit, 2-port bus switch that is pin compatible with the 74 series 16245 16-bit transceiver. Two enable signals (nBE) turn the switches on similar to the enable signals of the 16245. The bus switch creates no additional propagation delay or additional ground bounce noise. Pin Description Truth Table(1) Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance noitcnuFE Bn7 -0An tcennocsiDH Z -iH tcennoCL 7 -0Bn emaNniPO /In oitpircseD EBnI ) woLevitcA(elbanEtuptuOsuB 7An-0AnO /IA suB 7Bn-0BnO /IB suB 1BE 1A7 1A0 1B7 1B0 2BE 2A7 2A0 2B7 2B0 BA BE SW SW SW SW SW

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B16245 3.3V, 16-Bit, 2-Port NanoSwitch™ Capacitance (TA = 25°C, f = 1 MHz) Note: Stresses greater than those listed under MAXIMUM RAT- INGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Maximum Ratings (Above which useful life may be impaired. For user guidelines, not tested.) Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at V CC = 3.3V, TA = 25°C ambient and maximum loading. 3. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A,B) pins. 4. This parameter is determined by device characterization but is not production tested. sretemaraPn oitpircseDs noitidnoCtseT )1( .niM. pyT )2( .xaMs tinU V HI egatloVHGIHtupnIH GIHcigoLdeetnarauG leveL 0.2 V V LI egatloVWOLtupnIW OLcigoLdeetnarauG leveL 5.0–8 .0 I HI tnerruCHGIHtupnIV CC V,.xaM= NI V= CC 1± AµI LI tnerruCWOLtupnIV CC V,.xaM= NI DNG=1 ± I HZO tnerruCtuptuOecnadepmIhgiH0 ≤ B,A ≤ V CC 1± V KI egatloVedoiDpmalCV CC I,.niM= NI Am81–=7 .0–2 .1–V R NO ecnatsiseRNOhctiwS )3( V CC V,.niM= NI ,V0.0= I NO Am84= Ω V CC V,.niM= NI ,V4.2= I NO Am51= 015 1 sretemaraP )4( noitpircseDs noitidnoCtseT. pyTs tinU C NI ecnaticapaCtupnI V NI V0= 0.3 FpC FFO ffOhctiwS,ecnaticapaCB/A5 .8 C NO nOhctiwS,ecnaticapaCB/A0 .71

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B16245 3.3V, 16-Bit, 2-Port NanoSwitch™ Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at V CC = 3.3V, +25°C ambient. 3. Per TTL driven input (control inputs only); A and B pins do not contribute to I CC. 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the spec ified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guarantee d by design. Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load cap acitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the r ise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when use d in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. Power Supply Characteristics sretemaraPn oitpircseDs noitidnoC )1( .niMe pyT )2( .xaMs tinU I CC rewoPtnecseiuQ tnerruCylppuS V CC .xaM=V NI VroDNG= CC —— 0 1 Aµ ∆ I CC reptnerruCylppuS HGIHLTT@tupnI V CC .xaM=V NI V0.3= )3( —— 0 57 I DCC reptnerruCylppuS zHMreptupnI )4( V CC ,.xaM= nepOsniPBdnaA gnilggoTtupnIlortnoC elcyCytuD%05 —— 5 2.0/ Am zHM Switching Characteristics over Operating Range sretemaraPn oitpircseD snoitidnoC )1( .moC stinU.niM. xaM t HLP t LHP yaleDnoitagaporP )3,2( xAotxB,xBotxA CL Fp05= RL 005= Ω 52.0 snt HZP t LZP emiTelbanEsuB xBroxAotxEB CL ;Fp05= RL 005= Ω 15 .4 t ZHP t ZLP emiTelbasiDsuB xBroxAotxEB CL ;Fp05= RL 005= Ω 10 .5 Applications Information Logic Inputs Logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a 5.0V supply, the control or select pins may be driven low to 0V and high to 5.5V. Driving the control or select pins Rail-toRail® minimizes power consumption. Power-Supply Sequencing and Hot Plug Information Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to the input/output or control pins.

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B16245 3.3V, 16-Bit, 2-Port NanoSwitch™ Packaging Mechanical: 48-pin 240 Mil-Wide Thin Plastic TSSOP (A) Packaging Mechanical: 48-pin 300 Mil-Wide Plastic SSOP (V) .236 .244 .488 .496 .002 .006 SEATING PLANE .007 .010 .0197 BSC .004 .008 .319 12.4 12.6 6.0 6.2 0.50 0.17 0.27 8.1 0.05 0.15 0.09 0.20X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .018 .030 0.45 0.75 .047

1.20 Max

0.20 0.51 1.01 0.25 0.381 0.635.008 .008 .0160-8˚ 0.20 0.40 .110 2.79 .010 Gauge Plane .02 .04 .015 .025 x 45˚ .025 BSC 0.635 .291 .299 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS 7.39 7.59 .395 .420 10.03 10.67 .620 .630 15.75 16.00 .008 .0135 0.20 0.34 Nom. Max

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Ordering Information

Ordering Code Package Code Package Type PI3B16245A A 48-pin TSSOP PI3B16245AE A Pb-free & Green, 48-pin TSSOP PI3B16245V V 48-pin SSOP PI3B16245VE V Pb-free & Green, 48-pin SSOP Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com