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Part: PI74FCT191TS
Category:
Logic
-> Counters
-> CMOS/BiCMOS->FCT/FCT-T Family
Description: 4-Bit Synchronous Binary Up/down Counter
Company: Pericom Semiconductor Corporation
Datasheet: Download PI74FCT191TS datasheet File size : 313 kB
Request For quote: Find where to buy PI74FCT191TS
Datasheet text preview:
4-BIT REGISTER
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT191T (25 Series) PI74FCT2191T
High Speed CMOS Presettable Synchronous 4-Bit Binary Counters
Product Features
· PI74FCT191/2191T is pin compatible with bipolar FASTTM Series at a higher speed and lower power consumption · 25 series resistor on all outputs (FCT2XXX only) · TTL input and output levels · Low ground bounce outputs (25 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 300 mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor's PI74FCT series of logic circuits are p r o d u c e d in the Company's advanced 0.6 micron CMOS t e c h n o l o g y , 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 PI74FCT191T is a high speed CMOS 4-bit binary up/down counter. It has a single clock with clock enable and up/down control inputs and ripple carry output. The 191 has asynchronous preload inputs which override the count inputs. All inputs have clamp diodes for undershoot noise suppression. All outputs have ground bounce suppression.
Logic Block Diagram
U/D CE D0-D3 PL CP
Cup Q+Cup - Cdn Cdn =F =0
Q3-Q0
25 (FCT2XXX ONLY)
TC
25 (FCT2XXX ONLY)
RC
25 (FCT2XXX ONLY)
1
PS2084B
01/13/97
Product Pin Configurations (All Pins Top View)
Truth Table(1)
Inputs PL U/D CP L X X H L H H H X X H L H L H L X H H H H H H H X Notes: 1. H = High Voltage Level L = Low Voltage Level X = Dont Care Z = High Impedance CE X L L H L L X L L X DI D3- D0 X X X X X X X X X Outputs Q3-Q0 D3- D0 Q +1 Q- 1 Q F F 0- E 0 0 1- F TC X L L X H H L H H L RC X H H X H H H H Function Load Data Count Up Count Down Count Inhibit Count Up = 1111 Count Up = 1111 Count Up 1111 Count Down = 0000 Count Down = 0000 Count Down 0000
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT191T (25 SERIES) PI74FCT2191T 4-BIT BINARY COUNTERS
Product Pin Description
Pin Name D3- D0 Q3- Q0 I/O I O I I I I O O De s cription Data Inputs Data Outputs Preload Up/Down Select Count Enable Count Clock Terminal Count Ripple Clock
D1 Q1 Q0 CE U/D Q2 Q3 GND
1 2 3
16 15 14
VCC D0 CP RC TC PL D2 D3
PL U/D CE CP TC RC
16-Pin 4 Q16 13 5 S16 12
6 7 8 11 10 9
2
PS2084B
01/13/97
Maximum Ratings Mbovie whichRatings life may be impaired. For user guidelines, not tested.) (A ax mum the useful
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ........ 65°C to +150°C Ambient Temperature with Power Applied ......... -40°C to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... 0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ....... 0.5V to +7.0V DC Input Voltage ....... 0.5V to +7.0V DC Output Current .. 120 mA Power Dissipation ........ 0.5W Note: Stresses greater than those listed under 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.
DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 5.0V ± 5%)
Parameters VOH VOL VOL VIH VIL II H IIL VIK I OFF IO S VH Description Test Conditions(1) IOH = 15.0 mA IOL = 48 mA IOL = 12 mA (25 Series) 2.0 0.8 VIN = VCC VIN = GND 0.7 -- 60 -- 120 200 1 1 1.2 100 Min. Typ(2) Max. Units 2.4 3.0 0.3 0.3 0.50 0.50 V V V V V µA µA V µA mA mV Output HIGH Voltage VCC = Min., VIN = VIH or VIL Output LOW Current Output LOW Current Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Clamp Diode Voltage Power Down Disable Short Circuit Current Input Hysteresis VCC = Min., VIN = VIH or VIL VCC = Min., VIN = VIH or VIL Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VCC = Max. VCC = Min., IIN = 18 mA VCC = GND, VOUT = 4.5V VCC = Max. , VOUT = GND
(3)
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4) CIN COUT Description Input Capacitance Output Capacitance Test Conditions VIN = 0V VOUT = 0V Typ 6 8 Max. 10 12 Units pF pF
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is determined by device characterization but is not production tested.
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT191T (25 SERIES) PI74FCT2191T 4-BIT BINARY COUNTERS
3
PS2084B
01/13/97
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