PI74FCT161T(1996) View Datasheet(PDF) - Pericom Semiconductor
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Description
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PI74FCT161T Datasheet PDF : 6 Pages
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ADVANCE INFORMATION
PI74FCT161/163T
(25Ω Series) PI74FCT2161/2163T 112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677
High Speed CMOS Synchronous
4-Bit Binary Counters
Product Features:
• PI74FCT161/163/2161/2163T is pin compatible with bipolar
FAST™ Series at a higher speed and lower power
consumption
• 25Ω series resistor on all outputs (FCT2XXX only)
• TTL input and output levels
• 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 (Q16)
– 16-pin 300 mil wide plastic SOIC (S16)
Product Description:
Pericom Semiconductor’s PI74FCT series of logic circuits are pro-
duced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades. All PI74FCT2XXX devices
have a built-in 25 ohm series resistor on all outputs to reduce noise
due to reflections, thus eliminating the need for an external terminating
resistor.
The PI74FCT161T and PI74FCT163T 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 .
Logic Block Diagram
CET
CEP
D3-D0
PE
MR
CP
= FF
Cin Q+Cin
163 ONLY
TC
25Ω
(FCT2XXX ONLY)
Q3-Q0
25Ω
(FCT2XXX ONLY)
161 ONLY
1
PS2083A 07/16/96
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