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QS74FCT2521T 데이터시트 PDF




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부품번호 QS74FCT2521T 기능
기능 High Speed CMOS 8-Bit Identity Comparator
제조업체 QUALITY
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QS74FCT2521T 데이터시트, 핀배열, 회로
Q
QSFCT521T, 2521T
HigHhigShpSepeedeCdMCOMSOS
Bu8s-EBxitchange
Identity SCwomitcphaersator
QS54/74QFCST3532813T
QS54/74QFCS3T22358231T
FEATURES/BENEFITS
• Pin and function compatible to the 74F521,
74FCT521, and 74ALS521
• CMOS power levels: <7.5 mW static
• Available in DIP, SOIC, QSOP, ZIP, HQSOP
• Undershoot clamp diodes on all inputs
• TTL-compatible input and output levels
• Ground bounce controlled outputs
• Reduced output swing of 0-3.5V
• Military product compliant to MIL-STD-883
FCT-T 521T
FCT-T 2521T
• JEDEC-FCT spec compatible
• Fastest CMOS logic family available
• Standard thru D speed grades; 3.9 ns tPD for D
• IOL = 48 mA Com., 32 mA Mil.
DESCRIPTION
• Built-in 25series resistor outputs reduce
reflection and other system noise
• Standard thru D speed grades; 3.9 ns tPD for D
• IOL = 12 mA Com.
The QSFCT521 and QSFCT2521 are high-speed CMOS TTL-compatible 8-bit identity comparators. Two
words of up to eight bits are compared and a low output is provided when the words match. An expansion input
allows the comparison to be extended over multiple words. All inputs have clamp diodes for undershoot noise
suppression. All outputs have ground bounce suppression (see QSI Application Note AN-001).
FUNCTIONAL BLOCK DIAGRAM
A0
B0
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
IA = B
25
(FCT2521 Only)
OA = B
MDSL-00019-02
QUALITY SEMICONDUCTOR, INC.
1




QS74FCT2521T pdf, 반도체, 판매, 대치품
QSFCT521T, 2521T
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Commercial TA = 0°C to 70°C, VCC = 5.0V ± 5%
Military TA = –55°C to 125°C, VCC = 5.0V ± 10%
Symbol
VIH
VIL
VT
| IIH |
| IIL |
| IOZ |
IOS
IOR
VIC
VOH
VOL
VOL
ROUT
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Hysteresis
Input Current
Input HIGH or LOW
Off-State Output
Current (Hi-Z)
Short Circuit Current
(FCTXXX)
Current Drive
(FCT2XXX – 25)
Input Clamp Voltage
Output HIGH Voltage
Output LOW Voltage
(FCTXXX)
Output LOW Voltage
(FCT2XXX – 25)
Output Resistance
(FCT2XXX – 25)
Test Conditions
Logic HIGH for All Inputs
Logic LOW for All Inputs
VTLH – VTHL for All Inputs
Vcc = Max., 0 VIN < Vcc
Min Typ(1) Max Unit
2.0 — — V
— — 0.8 V
— 0.2 — V
——
5 µA
Vcc = Max., 0 VIN Vcc
——
5 µA
Vcc = Max., VOUT = GND(2,3)
–60 —
— mA
Vcc = Min., VOUT = 2.0V(3)
50 — — mA
Vcc = Min., IIN = –18 mA, TA = 25°C(3)
Vcc = Min. IOH = –12 mA (MIL)
IOH = –15 mA (COM)
Vcc = Min. IOL = 32 mA (MIL)
IOL = 48 mA (COM)
Vcc = Min. IOL = 12 mA (MIL)
IOL = 12 mA (COM)
Vcc = Min. IOL = 12 mA (MIL)
IOL = 12 mA (COM)
2.4
2.4
20
–0.7 –1.2
——
——
— 0.50
— 0.50
— 0.50
— 0.50
25 —
28 40
V
V
V
V
Notes:
1. Typical values indicate Vcc = 5.0V and TA = 25°C.
2. Not more than one output should be shorted and the duration is 1 second.
3. These parameters are guaranteed by design but not tested.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Commercial TA = 0°C to 70°C, Vcc = 5.0V ± 5%
Military TA = –55°C to 125°C, Vcc = 5.0V ± 10%
CLOAD = 50 pF, RLOAD = 500unless otherwise noted.
Symbol
tPHL
tPLH
tPHLX
tPLHX
Description(1)
Propagation Delay
Ai = Bi to OA = B
Propagation Delay
IA = B to OA = B
521T 521AT 521BT 521CT 521DT
2521T 2521AT 2521BT 2521CT 2521DT
Min Max Min Max Min Max Min Max Min Max Unit
COM 1.5 11 1.5 7.2 1.5 5.5 1.5 4.5 1.5 4.1 ns
MIL 1.5 15 1.5 9.5 1.5 7.3 1.5 5.1
COM 1.5 10 1.5 6 1.5 4.6 1.5 4.1 1.5 3.9 ns
MIL 1.5 9 1.5 7.8 1.5 6.0 1.5 4.5
Notes:
1. Minimum guaranteed but not tested.
4
QUALITY SEMICONDUCTOR, INC.
MDSL-00019-02

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QS74FCT2521T

High Speed CMOS 8-Bit Identity Comparator

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