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PDF IDTQS742827CT Data sheet ( Hoja de datos )

Número de pieza IDTQS742827CT
Descripción HIGH-SPEED CMOS BUS INTERFACE 10-BIT BUFFER
Fabricantes IDT 
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IDTQS74FCT2827ATBT//CT
HIGH-SPEED CMOS BUS INTERFACE 10-BIT BUFFER
HIGH-SPEED CMOS
BUS INTERFACE
10-BIT BUFFER
INDUSTRIAL TEMPERATURE RANGE
IDTQS74FCT2827AT/BT/CT
FEATURES:
• CMOS power levels: <7.5mW static
• Undershoot clamp diodes on all outputs
• True TTL input and output compatibility
• Ground bounce controlled outputs
• Reduced output swing of 0 to 3.5V
• Built-in 25series resistor outputs reduce reflection and other
system noise
• A,B, and C speed grades with 4.4ns tPD for C
• IOL = 12mA
• Available in SOIC and QSOP packages
DESCRIPTION:
The IDTQS74FCT2827T is a 10-bit buffer with 3-state outputs and a
25resistor, useful for driving transmission lines and reducing system
noise. The 2827T series parts can replace the 827T series to reduce noise
in an existing design. 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
Dx
OE1
OE2
Yx
25
INDUSTRIAL TEMPERATURE RANGE
c 2002 Integrated Device Technology, Inc.
1
MARCH 2002
DSC-5258/4

1 page




IDTQS742827CT pdf
IDTQS74FCT2827ATBT//CT
HIGH-SPEED CMOS BUS INTERFACE 10-BIT BUFFER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
VIN
Pulse
Generator
VCC
VOUT
D.U.T.
500W
50pF
500W
RT CL
FCTL link
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.
Test Circuits for All Outputs
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
tSU
tSU
tH
tREM
tH
Set-Up, Hold, and Release Times
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
FCTL link
LOW-HIGH-LOW
PULSE
HIGH-LOW-HIGH
PULSE
tW
Pulse Width
1.5V
1.5V
FCTL link
SAME PHASE
INPUT TRANSITION
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
tPLH
tPLH
tPHL
tPHL
Propagation Delay
3V
1.5V
0V
VOH
1.5V
VOL
3V
1.5V
0V
FCTL link
CONTROL
INPUT
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
ENABLE
DISABLE
3V
1.5V
tPZL
SWITCH
CLOSED
tPZH
3.5V
1.5V
tPLZ
tPHZ
SWITCH
OPEN
1.5V
0V
Enable and Disable Times
0V
3.5V
0.3V VOL
0.3V VOH
0V
FCTL link
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

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