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Details, datasheet, quote on part number:PI74ALVCH16344
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Datasheet text preview:
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH16344
1-Bit to 4-Bit Address/Driver with 3-State Outputs
Product Features
· · · · · · · · PI74ALVCH16344 is designed for low voltage operation VCC = 2.3V to 3.6V Hysteresis on all inputs Typical VOLP (Output Ground Bounce) < 0.8V at VCC = 3.3V, TA = 25°C Typical VOHV (Output VOH Undershoot) < 2.0V at VCC = 3.3V, TA = 25°C Bus Hold retains last active bus state during 3-State, eliminating the need for external pullup resistors Industrial operation at 40°C to +85°C Packages available: 56-pin 240 mil wide plastic TSSOP (A) 56-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor's PI74ALVCH series of logic circuits are produced in the Company's advanced 0.5 micron CMOS technology, achieving industry leading speed. The PI74ALVCH16344 is a 1-bit to 4-bit buffer/driver designed for 2.3V to 3.6V Vcc operation. The address/driver is designed for applications where four seperate memory locations must be addressed by a single address. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The PI74ALVCH16344 has "Bus Hold" which retains the data input's last state whenever the data input goes to high-impedance preventing "floating" inputs and eliminating the need for pullup/ down resistors.
Logic Block Diagram
OE1 1 2 A1 8 6 B14 B11 A5 36 30 B54 OE3 29 34 B51
9 A2 14 13
B21 A6 B24 42
41
B61
37
B64
OE2
28 16 B31
OE4
56 48 B71
A3
15 20 B34
A7
43 44 B74
23 B41 A4 21 27 B44 A8 49
55 B81
51
B84
1
PS8166B
10/19/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH16344 1-Bit to 4-Bit Address Driver with 3-State Outputs
Product Pin Description
Pin Name OE A B GND VCC Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power
Truth Table(1)
Inputs OE L L H A H L H Outputs Bn H L Z
Product Pin Configuration
OE1 B11 B12 GND B13 B14 VCC A1 B21 B22 GND B23 B24 A2 A3 B31 B32 GND B33 B34 A4 VCC B41 B42 GND B43 B44 OE2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 OE4 B81 B82 GND B83 B84 VCC A8 B71 B72 GND B73 B74 A7 A6 B61 B62 GND B63 B64 A5 VCC B51 B52 GND B53 B54 OE3
Notes: 1. H = High Signal Level L = Low Signal Level X = Don't Care or Irrelevant Z = High Impedance
56-Pin A,V
45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
2
PS8166B
10/19/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH16344 1-Bit to 4-Bit Address Driver with 3-State Outputs
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Supply Voltage Range,VCC ...... 0.5V to 4.6V Input Voltage Range, VI: Except I/O ports (1) ...... 0.5V to 4.6V I/O ports (1,2) ... 0.5V to VCC + 0.5V Output Voltage Range, VO (1,2) ........... 0.5V to VCC +0.5V Input Clamp Current, IIK (VI <0) ........ 50mA Output Clamp Current, IOK (VO <0) ........ 50mA Continuous Output Current, IO .......... ±50mA Continuous Current through each VCC or GND ....... ±100mA Package Thermal Impedance, JA(3) ... 39ºC/W Storage Temperature Range, TSTG ..... 65ºC to 150ºC 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.
Note: 1. The input negative voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. This value is limited to 4.6V maximum. 3. The package thermal impedance is calculated in accordance with JESD 51. Recommended Operating Condition(1)
Parame te rs VCC D e s cription Supply Voltage VCC = 1.65V to 1.95V VIH HIGH Level Input Voltage VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 1.65V to 1.95V VIL LO W Level Input Voltage VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VI VO Input Voltage O utput Voltage VCC = 1.65V IOH High- level O utput Current VCC = 2.3V VCC = 2.7V VCC = 3.0V VCC = 1.65V IOL Low- level O utput Current VCC = 2.3V VCC = 2.7V VCC = 3.0V t/v TA Input Transition rise or fall time O perating Free- Air Temperature 0 - 40 0 0 Te s t Conditions M in. 1.65 0.65x VCC 1.7 2 0.35x VCC 0.7 0.8 VCC VCC 4 12 12 24 4 12 12 24 10 85 ns/V °C mA V Typ. M ax. 3.6 Units
Note: 1. Unused control inputs must be held at VCC or GND to ensure proper device operation.
3
PS8166B
10/19/99
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