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PDF PI74FCT161T Data sheet ( Hoja de datos )
| Número de pieza | PI74FCT161T | |
| Descripción | (PI74FCT2161T - PI74FCT2163T) High Speed CMOS Synchronous 4-bit Binary Counters | |
| Fabricantes | Pericom Semiconductor Corporation | |
| Logotipo |  |
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PI74FCT161T/163T
(25Ω Series) PI74FCT2161T/2163T
1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
High Speed CMOS Synchronous
4-Bit Binary Counters
Product Features
• PI74FCT161/163/2161/2163T are pin-compatible with
bipolar FASTTM Series at a higher speed and lower power
consumption
• 25Ω series resistor on all outputs (FCT2XXX only)
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• Low ground bounce outputs (25Ω series only)
• Extremely low static power
• Hysteresis on all inputs
• Industrial operating temperature range: -40°C to + 85°C
• Packages available:
- 16-pin 150 mil wide plastic QSOP (Q)
- 16-pin 150 mil wide plastic SOIC (W)
- 16-pin 300 mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor’s PI74FCT series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades. All PI74FCT2XXX devices
have a built-in 25Ω series resistor on all outputs to reduce noise
owing to reflections, thus eliminating an external terminating
resistor.
The PI74FCT161T and PI74FCT163 are high speed CMOS
synchronous presettable 4-bit binary counters. The 161 has an
asynchronous clear, the 163 has a clocked synchronous clear. Data
is preloaded or the counters count on the rising edge of the clock.
Count enable inputs and terminal count outputs allow these counters
to be cascaded without loss of speed. Preset inputs override count
inputs, and clear inputs override both preset and count inputs. All
inputs have clamp diodes for undershoot noise suppression. All
outputs have ground bounce suppression.
Functional Block Diagram
CET
= FF
CEP
D3-C0
PE
MR
CP
Cin Q+Cin
163 Only
TC
25 Ohm
(FCT2XXX Only)
Q3-Q0
25 Ohm
(FCT2XXX Only)
161 Only
Pin Configurations
MR
CP
D0
D1
D2
D3
CEP
GND
1
2
3
4
5
6
7
8
16 VCC
15 TC
14 Q0
13 Q1
12 Q2
11 Q3
10 CET
9 PE
1 PS2083B 10/08/01
1 page  
PI74FCT161T/163T
(25Ω SERIES) PI74FCT2161T/2163T
4-BIT BINARY COUNTERS1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Switching Characteristics (Over Operating Range)
Symbol Description(1)
Conditions
161T, 163T,
2161T, 2163T
Min. Max.
tCPQ
Propagation Delay
CP to QI (161/3)
CL = 50pF
RL = 500 Ohm
2.0
9.5
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tMRQ
Propagation Delay
MR to QI (161)
tMRQ
Propagation Delay
MR to QI (2161)
tCPTC
Propagation Delay
CP to TC
CL = 50pF
RL = 500 Ohm
CL = 50pF
RL = 500 Ohm
CL = 50pF
RL = 500 Ohm
CL = 50pF
RL = 500 Ohm
2.0
2.0
2.0
2.0
9.5
13
14
15
tCETC
tMRTC
Propagation Delay
CET to TC
Propagation Delay
MR to TC
CL = 50pF
RL = 500 Ohm
CL = 50pF
RL = 500 Ohm
1.5
1.5
8.5
11.5
161AT, 163AT,
2161AT, 2163AT
Min. Max.
2.0 6.2
2.0 6.2
2.0 8.5
2.0 9.1
2.0 9.8
1.5 5.5
1.5 7.5
161CT, 163CT
Min. Max.
2.0 5.6
2.0 7.8
2.0 8.8
1.5 5.0
1.5 6.8
Units
ns
ns
ns
ns
ns
ns
ns
Notes:
1. Minimums Test Circuit and Waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. PI74FCT2161 is available only by minimum special order.
5 PS2083B 10/08/01
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet PI74FCT161T.PDF ] | |
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