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Details, datasheet, quote on part number:QS74FCT2157T
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Datasheet text preview:
IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
HIGH-SPEED CMOS QUAD 2-INPUT M U LT I P L E X E R
FEATURES:
· · · · · ·
IDTQS74FCT2157AT/CT
DESCRIPTION:
CMOS power levels: <7.5mW static Undershoot clamp diodes on all inputs True TTL input and output compatibility Ground bounce controlled outputs Reduced output swing of 0 to 3.5V Built-in 25 series resistor outputs reduce reflection and other system noise · A and C speed grades with 4.3ns for C · IOL = 12mA · Available in SOIC, QSOP, and S1 packages
The IDTQS74FCT2157T is a high-speed CMOS TTL-compatible, quad, 2-input multiplexer with a 25 resistor output, useful for driving transmission lines and reducing system noise. All inputs have clamp diodes for undershoot noise suppression. All outputs have ground bounce suppression. Outputs will not load an active bus when Vcc is removed from the device.
FUNCTIONAL BLOCK DIAGRAM
E
15
S
1
I0 A
2
I1 A
3
I0 B
5
I1 B
6
I0 C
11
I1 C
10
I0 D
14
I1 D
13
2 5
4 7
25
9
25
12
2 5
YA
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
YB
YC
YD
INDUSTRIAL TEMPERATURE RANGE
1
JANUARY 2001
DSC-5401/3
© 2001 Integrated Device Technology, Inc.
IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM TSTG Description Terminal Voltage with Respect to GND Storage Temperature DC Output Current Max Current Sink/Pin Input Diode Current, VIN < 0 DC Output Current, VOUT < 0 Max 0.5 to +7 65 to +150 +120 -20 -50 Unit V °C mA mA mA
S I0A I1A YA I0B I1B YB GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC E I0D I1D YD I0C I1C YC
IOUT IIK IOK
NOTE: 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 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.
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol CI N CO U T Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 4 8 Max. -- -- Unit pF pF
NOTE: 1 . This parameter is measured at characterization but not tested.
SOIC/ QSOP/ S1 TOP VIEW
PIN DESCRIPTION
Pin Names Ixx E S Yxx Description Data Inputs Enable Input (Active LOW) Select Input Outputs
FUNCTION TABLE(1)
E H L L S X L H Inputs YA YB L L 10A 10B 11B 11A YC L 10C 11C YD L 10D 11D Function Disable Select 0 Select 1
NOTE: 1 . H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level
2
IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Industrial: TA = 40°C to +85°C, VCC = 5.0V ±5%
Symbol VIH VIL VT IIH IIL IOR VIC VOH VOL ROUT Parameter Input HIGH Level Input LOW Level Input Hysteresis Input HIGH Current Input LOW Current Current Drive Input Clamp Voltage Output HIGH Voltage Output LOW Voltage Output Resistance VCC = Max., VOUT = GND(2) VCC = Min., IIN = 18mA, TA = VCC = Min. VCC = Min. VCC = Min. 25°C(2) IOH = 15mA IOL = 12mA IOH = 12mA 50 -- 2.4 -- 20 -- 0.7 -- -- 28 -- 1.2 -- 0.5 40 mA V V V Test Conditions Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VTLH - VTHL for all inputs VCC = Max. 0 VIN VCC Min. 2 -- -- -- Typ.(1) -- -- 0.2 -- Max. -- 0.8 -- ±5 Unit V V V µA
NOTES: 1 . Typical values are at VCC = 5.0V, +25°C ambient. 2 . This parameter is guaranteed but not tested.
POWER SUPPLY CHARACTERISTICS
Symbol ICC Parameter Quiescent Power Supply Current Test Conditions(1) VCC = Max. freq = 0 0V VIN 0.2V or VCC - 0.2V VIN VCC ICC Supply Current per Input TTL Inputs HIGH VCC = Max. VIN = 3.4V(2) freq = 0 VCC = Max. Outputs Open and Enabled One Bit Toggling 50% Duty Cycle Other inputs at GND or VCC(3,4)
NOTES: 1 . For conditions shown as Min. or Max., use appropriate value specified under DC Electrical Characteristics. 2 . Per TTL driven input (VIN = 3.4V). 3 . For flip-flops, ICCD is measured by switching one of the data input pins so that the output changes every clock cycle. This is a measurement of device power consumption only and does not include power to drive load capacitance or tester capacitance. 4 . IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fCP/2 + fiNi) ICC = Quiescent Current ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current caused by an Output Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fi = Output Frequency Ni = Number of Outputs at fi All currents are in milliamps and all frequencies are in megahertz.
Min. --
Max. 1.5
Unit mA
--
2
mA
ICCD
Supply Current per Input per MHz
--
0.25
mA/ MHz
3
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