|
Details, datasheet, quote on part number:74FCT16652T
| |
Datasheet text preview:
IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
IDT74FCT16652AT/CT
FEATURES:
· · · · · · · ·
0.5 MICRON CMOS Technology High-speed, low-power CMOS replacement for ABT functions Typical tSK(o) (Output Skew) < 250ps Low input and output leakage 1µA (max.) VCC = 5V ±10% High drive outputs (32mA IOH, 64mA IOL) Power off disable outputs permit "live insertion" Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25°C · Available in SSOP and TSSOP packages
DESCRIPTION:
The FCT16652T 16-bit registered transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices are organized as two independent 8-bit bus transceivers with 3-state D-type registers. For example, the xOEAB and xOEBA signals control the transceiver functions. The xSAB and xSBA control pins are provided to select either real time or stored data transfer. The circuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between stored and real time data. A low input level selects real-time data and a high level selects stored data. Data on the A or B data bus, or both, can be stored in the internal D-flip-flops by low-to-high transitions at the appropriate clock pins (xCLKAB or xCLKBA), regardless of the select or enable control pins. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin. The FCT16652T is ideally suited for driving high capacitance loads and lowimpedance backplanes. The output buffers are designed with power off disable capability to allow "live insertion" of boards when used as backplane drivers.
FUNCTIONAL BLOCK DIAGRAM
1O E AB 1O E B A 1C LK B A 1S B A 1C LK A B 1S A B B R EG
2O E A B 2O E B A 2C LK BA 2S B A 2C LK AB 2S A B B R EG
D C
1A 1 A R EG 1B 1 2A 1 A R EG
D C
2B 1
D C
D C
T O SEVEN O T H E R CHANNELS
T O SEVEN O T H E R CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2002 Integrated Device Technology, Inc.
JUNE 2002
DSC-5450/2
IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1OE AB 1C LK A B 1S A B
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Storage Temperature DC Output Current Max 0.5 to +7 0.5 to VCC+0.5 65 to +150 60 to +120 Unit V V °C mA
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
1OE B A 1C LK B A 1S B A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
VTERM(2) VTERM(3) TSTG I OUT
GND
1A 1 1A 2
GND
1B 1 1B 2
VCC
1A 3 1A 4 1A 5
VCC
1B 3 1B 4 1B 5
NOTES: 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. 2 . All device terminals except FCT162XXX Output and I/O terminals. 3 . Output and I/O terminals for FCT162XXX.
GND
1A 6 1A 7 1A 8 2A 1 2A 2 2A 3
GND
1B 6 1B 7 1B 8 2B 1 2B 2 2B 3
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. 4.5 5.5 Max. 6 8 Unit pF pF
NOTE: 1 . This parameter is measured at characterization but not tested.
GND
2A 4 2A 5 2A 6
GND
2B 4 2B 5 2B 6
PIN DESCRIPTION
Pin Names xAx xBx xCLKAB, xCLKBA xSAB, xSBA xOEAB xOEBA Description Data Register A Inputs Data Register B Outputs Data Register B Inputs Data Register A Outputs Clock Pulse Inputs Output Data Source Select Inputs Output Enable Inputs
VCC
2A 7 2A 8
VCC
2B 7 2B 8
GND
2S A B 2C LK A B
GND
2S B A 2C LK B A 2OE B A
2O EAB
SSOP/ TSSOP TOP VIEW
2
IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
FUNCTION TABLE
Inputs xOEAB L L X H L L L L H H H xOEBA H H H H X L L L H H L xCLKAB H or L H or L X X X H or L H or L xCLKBA H or L H or L X H or L X X H or L xSAB X X X X(2) X X X X L H H xSBA X X X X X X(2) L H X X H Data I/O(1) xAx Input Input Input Unspecified(1) Output Output Input Output xBx Input Unspecified(1) Output Input Input Input Output Output Operation or Function Isolation Store A and B Data Store A, Hold B Store A in Both Registers Hold A, Store B Store B in Both Registers Real Time B Data to A Bus Stored B Data to A Bus Real Time A Data to B Bus Stored A Data to B Bus Stored A Data to B Bus and Stored B Data to A Bus
NOTES: 1 . The data output functions may be enabled or disabled by various signals at the xOEAB or xOEBA inputs. Data input functions are always enabled, i.e. data at the bus pins will be stored on every LOW-to-HIGH transition on the clocks inputs. 2 . Select control = L: clocks can occur simultaneously. Select control = H: clocks must be staggered to load both registers. 3 . H = HIGH Voltage Level L = LOW Voltage Level X = Don't care = LOW-to-HIGH Transition
3
IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
BUS A
BU S B
BU S A
BUS B
xO EA B
xO E B A
xCLKA B
xC L K B A
xSA B
xSB A
xO E A B
xO E B A
xC L K A B
xCLKB A
xS A B
xS B A
L
L
X
X
X
L
H
H
X
X
L
X
Real-Time Transfer Bus B to A
Real-Time Transfer Bus A to B
BUS A
BU S B
BUS A
BUS B
xO E A B
xO E B A
xC L K A B
xC L K B A
xS A B
xS B A
xO E A B
xO E B A
xCLKA B
xC L K B A
xS A B
xS B A
X L L
H X H
X
X X X
X X X
H
L
H or L
H or L
H
H
X
Storage from A and/or B
Transfer Stored Data to A and/or B
4
IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
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 ±10%
Symbol VIH VIL IIH IIL IOZH IOZL VIK IOS VH ICCL ICCH ICCZ Parameter Input HIGH Level Input LOW Level Input HIGH Current (Input pins)(5) Input HIGH Current (I/O pins)(5) Input LOW Current (Input pins)(5) Input LOW Current (I/O pins)(5) High Impedance Output Current (3-State Output pins)(5) Clamp Diode Voltage Short Circuit Current Input Hysteresis Quiescent Power Supply Current VCC = Max VIN = GND or VCC VCC = Min., IIN = 18mA VCC = Max., VO = GND(3) -- VCC = Max. VO = 2.7V VO = 0.5V VI = GND Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC Min. 2 -- -- -- -- -- -- -- -- 80 -- -- Typ.(2) -- -- -- -- -- -- -- -- 0.7 140 100 5 Max. -- 0.8 ±1 ±1 ±1 ±1 ±1 ±1 1.2 250 -- 500 V mA mV µA µA Unit V V µA
OUTPUT DRIVE CHARACTERISTICS
Symbol IO VOH Parameter Output Drive Current Output HIGH Voltage VCC = Max., VO = VCC = Min. VIN = VIH or VIL VOL IOFF Output LOW Voltage Input/Output Power Off Leakage(5) VCC = Min. VIN = VIH or VIL VCC = 0V, VIN or VO 4.5V -- -- ±1 µA
NOTES: 1 . For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2 . Typical values are at VCC = 5.0V, +25°C ambient. 3 . Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4 . Duration of the condition can not exceed one second. 5 . This test limit for this parameter is ±5µA at TA = 55°C.
Test Conditions(1) 2.5V(3) IOH = 3mA IOH = 15mA IOH = 32mA(4) IOL = 64mA
Min. 50 2.5 2.4 2 --
Typ.(2) -- 3.5 3.5 3 0.2
Max. 180 -- -- -- 0.55
Unit mA V V
5
|
|
