74FCT257CTQG

IDT74FCT257AT/CT/DT FAST CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE FAST CMOS IDT74FCT257AT/CT/DT QUAD 2-INPUT OBSOLETE PART MULTIPLEXER DESCRIPTION: FEATURES: The FCT257T is a high-speed quad 2-input multiplexer built using an A, C, and D grades advanced dual metal CMOS technology. Four bits of data from two sources Low input and output leakage 1A (max.) can be selected using the common select input. The four buffered outputs CMOS power levels present the selected data in the true (non-inverting) form. True TTL input and output compatibility: The FCT257T has a common Output Enable (OE) input. When OE is VOH = 3.3V (typ.) high, all outputs are switched to a high-impedance state allowing the outputs VOL = 0.3V (typ.) to interface directly with bus-oriented systems. High Drive outputs (-15mA IOH, 48mA IOL) Meets or exceeds JEDEC standard 18 specifications Power off disable outputs permitlive insertio Available in SOIC and QSOP packages FUNCTIONAL BLOCK DIAGRAM S Three other multiplexers I1B I1D Z B ZD I0B I0D I1A Z A 0A I OE INDUSTRIAL TEMPERATURE RANGE SEPTEMBER 2009 1 2009 Integrated Device Technology, Inc. DSC-5500/7 OBSOLETE PART NOT RECOMMENDED FOR NEW DESIGNSIDT74FCT257AT/CT/DT FAST CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE (1) PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS Symbol Description Max Unit (2) VTERM Terminal Voltage with Respect to GND 0.5 to +7 V (3) VTERM Terminal Voltage with Respect to GND 0.5 to VCC+0.5 V TSTG Storage Temperature 65 to +150 C 1 S 16 VCC IOUT DC Output Current 60 to +120 mA NOTES: 2 I0A 15 OE 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation 3 of the device at these or any other conditions above those indicated in the operational I1A 14 I0C sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. No terminal voltage may exceed Vcc by +0.5V unless otherwise noted. 4 ZA 13 I1C 2. Inputs and Vcc terminals only. 3. Output and I/O terminals only. 5 I0B ZC 12 6 I1B 11 I0D CAPACITANCE (TA = +25C, F = 1.0MHz) (1) Symbol Parameter Conditions Typ. Max. Unit ZB 7 10 I1D CIN Input Capacitance VIN = 0V 6 10 pF COUT Output Capacitance VOUT = 0V 8 12 pF 8 9 GND ZD NOTE: 1. This parameter is measured at characterization but not tested. SOIC/ QSOP TOP VIEW PIN DESCRIPTION Pin Names Description I0AI0D Source 0 Data Inputs I1AI1D Source 1 Data Inputs OE Output Enable (Active LOW) S Select Input ZAZD Outputs (1) FUNCTION TABLE Inputs OE SI0 I1 Output Zx HX X X Z LH X L L LH X H H LL L X L LL H X H NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Dont Care Z = High-Impedance 2