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IDTQS74FCT158AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
FEATURES:
* * * * * * * *
IDTQS74FCT158AT/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 A and C grades with 4.3ns for C IOL = 48mA Available in SOIC and QSOP packages
The IDTQS74FCT158T is a high-speed CMOS TTL-compatible, quad, 2-input multiplexer. 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 S I0A I1A I0B I1B I0C I1C I0D I1D
YA
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
YB
YC
YD
INDUSTRIAL TEMPERATURE RANGE
1
MARCH 2001
DSC-5232/1
(c) 2001 Integrated Device Technology, Inc.
IDTQS74FCT158AT/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 = +25C, F = 1.0MHz)
Symbol CIN COUT 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 TOP VIEW
PIN DESCRIPTION
Pin Names Ixx S E YA - YD Data Inputs Select Input Enable Input Data Outputs Description
FUNCTION TABLE(1)
E H L L S X L H Inputs YA YB H H 10A 10B 11B 11A YC H 10C 11C YD H 10D 11D Function Disable Select 0 Select 1
NOTE: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level
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IDTQS74FCT158AT/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 = -40C to +85C, VCC = 5.0V 5%
Symbol VIH VIL VT IIH IIL IOS VIC VOH VOL Parameter Input HIGH Level Input LOW Level Input Hysteresis Input HIGH Current Input LOW Current Short Circuit Current Input Clamp Voltage Output HIGH Voltage Output LOW Voltage VCC = Max., VOUT = GND(2) VCC = Min., IIN = -18mA, TA = VCC = Min. VCC = Min. 25C(2) IOH = -15mA IOL = 48mA -60 -- 2.4 -- -- -0.7 -- -- -- -1.2 -- 0.5 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 A
NOTES: 1. Typical values are at VCC = 5.0V, +25C 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
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IDTQS74FCT158AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1)
74FCT158AT Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay Ixx to Yx Propagation Delay S to Yx Propagation Delay E to Yx Min. 1.5 1.5 1.5 Max. 5 7 6 Min. 1.5 1.5 1.5 74FCT158CT Max. 4.3 5.2 4.8 Unit
ns ns ns
NOTE: 1. CLOAD = 50pF, RLOAD = 500 unless otherwise noted.
4
IDTQS74FCT158AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
VCC 500 VIN Pulse G enerator D.U.T. 50pF RT 500 CL VOUT 7.0V
SWITCH POSITION
Test Open Drain Disable Low Enable Low All Other Tests Switch Closed Open
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
FCTL link
Test Circuits for All Outputs
DATA INPUT tSU TIMING INPUT ASYNCHRO NOUS CONTROL PRESET CLEAR ETC. SYNCHRON OUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tREM tH
3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
FCTL link
LOW -HIGH-LOW PULSE tW HIG H-LOW -HIGH PULSE
FCTL link
1.5V
1.5V
tSU
tH
Pulse Width
Set-Up, Hold, and Release Times
ENABLE SAM E PHASE INPUT TRANSITIO N tPLH O UTPUT tPLH OPPOSITE PHASE INPUT TRANSITIO N tPHL tPHL 3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V
FCTL link
DISABLE 3V
CONTRO L INPUT tPZL OUTPUT NO RMALLY LOW SW ITCH CLOSED tPZH OUTPUT NO RMALLY HIGH SW ITCH OPEN 3.5V 1.5V 0.3V tPHZ 0.3V 1.5V 0V tPLZ
1.5V 0V 3.5V VOL VOH
0V
FCTL link
Propagation Delay
Enable and Disable Times
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns.
5
IDTQS74FCT158AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XX XX FCT XXXX Device Type Package Temp. Range
SO Q S1
Small Outline IC (gull wing) Quarter Size Small Outline Package Small Outline IC (gull wing)
158AT 158CT
High-Speed CMOS Quad 2-Input Multiplexer
74
-40C to +85C
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for Tech Support: logichelp@idt.com (408) 654-6459
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