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Part: QS29FCT2052T
Category:
Description:
Company: Integrated Device Technology, Inc.
Datasheet: Download QS29FCT2052T datasheet File size : 186 kB
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Datasheet text preview:
IDTQS29FCT2052AT/BT/CT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
HIGH-SPEED CMOS IDTQS29FCT2052AT/BT/CT 8-BIT BUT INTERFACE REGISTER TRANSCEIVER
FEATURES:
- - - - - - - - - Pin and function compatible to the 29FCT2052 and 29FCT2052/53T 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, B, and C speed grades with 5.8ns tPD for C speed guaranteed with 50pF loads Available in SOIC and QSOP packages
DESCRIPTION:
The QS29FCT2052T is an 8-bit, high-speed, CMOS TTL-compatible, registered bus transceiver with 3-state outputs and a 25 resistor, useful for driving transmission lines and reducing system noise. The QS29FCT2052 series part can replace the FCT52 series to reduce noise in an existing design. All outputs 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
A BUS
25
OEA A R e g is te r CEB CPB B R e g is te r OEB CEA CPA
25
B BUS
INDUSTRIAL TEMPERATURE RANGE
1
c 2001 Integrated Device Technology, Inc.
FEBRUARY 2001
DSC-5394/-
IDTQS29FCT2052AT/BT/CT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE (1) Unit V °C mA mA mA
FCTL
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Symbol VTERM Description Terminal Voltage with Respect to GND Storage Temperature DC Output Current Max Sink Current/Pin Input Diode Current, VIN < 0 Output Diode Current, VOUT < 0
Max. 0.5 to +7 65 to +150 120 20 50
B7 B6 B5 B4 B3 B2 B1 B0 OEB CPA CEA GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 S O 2 4 -2 1 9 S O 2 4 -8 18 17 16 15 14 13
V CC A7 A6 A5 A4 A3 A2 A1 A0 OEA CPB CEB
TSTG 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 = +25OC, f = 1.0MHz)
Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 8 8 Max. -- -- Unit pF pF
FCT_1
NOTE: 1. This parameter is measured at characterization but not tested.
SOIC/ QSOP TOP VIEW
FUNCTION TABLES
Inputs CPA X X Description X CPB X X X CEA H L H L L
(1)
Outputs CEB H H L L L Ax Hold Load Hold X Load Bx Hold Hold Load Load X
PIN DESCRIPTION
Name Ax Bx CPA CPB CEA CEB OEA OEB I/O I/O I/O I I I I I I A Bus B Bus Register A Clock Input Register B Clock Input Register A Clock Enable Register B Clock Enable Output Enable, Reg. B to Bus A Output Enable, Reg. A to Bus B
Inputs CPA X X X X CPB X X X X CEA X X X X CEB X X X X OEA H L H L OEB L H H L Ax Z
Outputs Bx Reg. A Z Z Reg. A
Reg. B Z Reg. B
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedence = LOW-to-HIGH Transition
2
IDTQS29FCT2052AT/BT/CT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER
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 IOZ IOR VIC VOH VOL ROUT Parameter Input HIGH Level Input LOW Level Input Hysteresis Input HIGH Current Input LOW Current Off-State Output Current (Hi-Z) Current Drive Input Clamp Voltage Output HIGH Voltage Output LOW Voltage Output Resistance VCC = Max. VCC = Max., VOUT = 2.0V(2) VCC = Min., IIN = 18mA, TA = 25°C(2) VCC = Min. VCC = Min. VCC = Min. IOH = -15mA IOL = 12mA IOL = 12mA 0 VIN Vcc -- 50 -- 2.4 -- 20 -- -- 0.7 -- -- 28 ±5 -- 1.2 -- 0.5 40 µA 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, TA = 25°C. 2. This parameter is guaranteed but not tested.
POWER SUPPLY CHARACTERISTICS
Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 5% Symbol ICC Parameter Quiescent Power Supply Current Test Conditions(1) VCC = Max. freq = 0 0V VIN 0.2V or Vcc-0.2V VIN Vcc 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) Min. -- Max. 1.5 Unit mA
ICC
Supply Current per Input TTL Inputs HIGH
--
2
mA
ICCD
Supply Current per Input per MHz
--
0.25
mA/MHz
FCTL
NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL 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 = Input Frequency Ni = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz.
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