ETC IDTQS74FCT2374CTQ

IDTQS74FCT2374T/AT/CT
HIGH-SPEED CMOS BUS INTERFACE 8-BIT REGISTER
INDUSTRIAL TEMPERATURE RANGE
HIGH-SPEED CMOS
BUS INTERFACE
8-BIT REGISTER
IDTQS74FCT2374T/AT/CT
FEATURES:
DESCRIPTION:
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The IDTQS74FCT2374T is a high-speed CMOS TTL-compatible 8-bit
register with a buffered common clock and a buffered output enable control.
The IDTQS74FCT2374T has a 25Ω resistor output that is useful for driving
transmission lines and reducing system noise. The FCT2374 is a noninverting device. 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.
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
Ω series resistor outputs reduce reflection and other
Built-in 25Ω
system noise
• Std., A and C speed grades with 5.2ns tPD for C
• IOL = 12mA
• Available in SOIC and QSOP packages
FUNCTIONAL BLOCK DIAGRAM
25Ω
Dx
D
CP
11
OE
1
Ox
Q
CP
INDUSTRIAL TEMPERATURE RANGE
MARCH 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5407/4
IDTQS74FCT2374T/AT/CT
HIGH-SPEED CMOS BUS INTERFACE 8-BIT REGISTER
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Symbol
OE
1
20
VCC
O0
2
19
O7
D0
3
18
D7
D1
4
17
D6
O1
5
16
O6
O2
6
15
O5
D2
7
14
D5
D3
8
13
D4
O3
9
12
O4
GND
11
10
Description
Max
Unit
VTERM
Terminal Voltage with Respect to GND
–0.5 to +7
V
TSTG
Storage Temperature
–65 to +150
°C
IOUT
DC Output Current Max Sink Current/Pin
120
mA
IIK
Input Diode Current, VIN < 0
–20
mA
IOK
Output Diode Current, VOUT < 0
–50
mA
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)
Parameter(1)
Symbol
CP
Conditions
Typ.
Max.
Unit
CIN
Input Capacitance
VIN = 0V
4
—
pF
COUT
Output Capacitance
VOUT = 0V
8
—
pF
NOTE:
1. This parameter is measured at characterization but not tested.
SOIC/ QSOP
TOP VIEW
PIN DESCRIPTION
Pin Names
I/O
Dx
I
Description
Data Inputs
Ox
O
Data Outputs
CP
|
Clock Input
OE
I
3-State Output Enable (Active LOW)
FUNCTION TABLE(1)
Inputs
Outputs
OE
CP
Dx
Value Qx
Ox
H
L
X
—
Z
Disable Outputs
H
H
X
—
Z
Disable Outputs
L
↑
L
L
L
Load Input Data
L
↑
H
H
H
Enable Outputs
H
↑
L
L
Z
Load Input Data
H
↑
H
H
Z
Enable Outputs
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
↑ = LOW-to-HIGH transition
2
Internal
Function
IDTQS74FCT2374T/AT/CT
HIGH-SPEED CMOS BUS INTERFACE 8-BIT 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 ±5%
Symbol
Parameter
Test Conditions
Min.
Typ.(1)
Max.
Unit
2
—
—
V
VIH
Input HIGH Level
Guaranteed Logic HIGH Level
VIL
Input LOW Level
Guaranteed Logic LOW Level
—
—
0.8
V
∆VT
Input Hysteresis
VTLH - VTHL for all inputs
—
0.2
—
V
IIH
Input HIGH Current
VCC = Max.
0 ≤ VIN ≤ VCC
—
—
±5
µA
IIL
Input LOW Current
IOZ
Off-State Output Current (Hi-Z)
0 ≤ VIN ≤ VCC
—
—
±5
µA
VCC = Max
2.0V(2)
IOR
VIC
Current Drive
Input Clamp Voltage
VCC = Max., VOUT =
VCC = Min, IIN = -18mA , TA = 25°C(2)
50
—
—
–0.7
—
–1.2
mA
V
VOH
VOL
ROUT(3)
Output HIGH Voltage
Output LOW Voltage
Output Resistance
VCC = Min.
VCC = Min.
VCC = Min.
2.4
—
15
—
—
21
—
0.5
35
V
V
Ω
IOH = -15mA
IOL = 12mA
IOH = 12mA
NOTES:
1. Typical values are at VCC = 5.0V, TA = 25°C.
2. This parameter is measured at characterization but not tested.
3. ROUT changed on March 8, 2002. See rear page for more information.
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
∆ICC
Supply Current per Input TTL Inputs HIGH
ICCD
Supply Current per Input per MHz
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
—
2
mA
—
0.25
mA/MHz
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.
3
IDTQS74FCT2374T/AT/CT
HIGH-SPEED CMOS BUS INTERFACE 8-BIT REGISTER
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tS
tH
tW
Parameter(2)
Propagation Delay
CP to Ox
Output Enable Time
OE to Yx
Output Disable Time(3)
OE to Yx
Data Setup Time, Dx to CP
Data Hold Time, Dx to CP
Clock Pulse Width, HIGH or LOW(3)
FCT2374T
Min.
Max.
2
10
FCT2374AT
Min.
Max.
2
6.5
FCT2374CT
Min.
Max.
2
5.2
1.5
12.5
1.5
6.5
1.5
6.2
ns
1.5
8
1.5
5.5
1.5
5
ns
2
1.5
7
—
—
—
2
1.5
5
—
—
—
1.5
1
4
—
—
—
ns
ns
ns
NOTES:
1. CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
2. Minimums guaranteed but not tested.
3. This parameter is guaranteed by design but not tested.
4
Unit
ns
IDTQS74FCT2374T/AT/CT
HIGH-SPEED CMOS BUS INTERFACE 8-BIT REGISTER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
VCC
SWITCH POSITION
7.0V
500Ω
Pulse
Generator
VOUT
VIN
D.U.T.
50pF
RT
500Ω
Test
Switch
Open Drain
Disable Low
Enable Low
Closed
All Other Tests
Open
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
CL
FCTL link
Test Circuits for All Outputs
DATA
INPUT
tH
tSU
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
3V
1.5V
0V
3V
1.5V
0V
tREM
tSU
LOW-HIGH-LOW
PULSE
1.5V
tW
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
3V
1.5V
0V
tH
FCTL link
Pulse Width
FCTL link
Set-Up, Hold, and Release Times
ENABLE
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
OUTPUT
tPLH
OPPOSITE PHASE
INPUT TRANSITION
tPHL
3V
1.5V
0V
VOH
1.5V
VOL
DISABLE
3V
1.5V
CONTROL
INPUT
tPZL
OUTPUT
NORMALLY
LOW
3V
1.5V
0V
OUTPUT
NORMALLY
HIGH
FCTL link
SWITCH
CLOSED
tPZH
SWITCH
OPEN
0V
tPLZ
3.5V
1.5V
3.5V
0.3V
VOL
tPHZ
0.3V
VOH
1.5V
0V
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
IDTQS74FCT2374T/AT/CT
HIGH-SPEED CMOS BUS INTERFACE 8-BIT REGISTER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS
XX
FCT
XXXX
Device Type
Temp. Range
XX
Package
SO
Q
Small Outline IC (gull wing)
Quarter Size Small Outline Package
2374T
2374AT
2374CT
High-Speed CMOS Bus Interface 8-Bit Register
74
–40°C to +85°C
As per PCN L0201-02, the Output Resistance (ROUT) specifications have changed as of March 8, 2002. The original specifications were:
Parameter
ROUT
Description
Min.
Typ.
Max.
Unit
VCC = Min, IOL = -15mA
20
28
40
Ω
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
6
for Tech Support:
[email protected]
(408) 654-6459