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PLC18V8Z

Zero standby power CMOS versatile PAL devices

Philips Electronics 

Philips Semiconductors

Zero standby power

CMOS versatile PAL devices

Product specification

PLC18V8Z

DESCRIPTION

The PLC18V8Z is a universal PAL® device featuring high

performance and virtually zero-standby power for power sensitive

applications. They are reliable, user-configurable substitutes for

discrete TTL/CMOS logic. While compatible with TTL and HCT

logic, the PLC18V8Z can also replace HC logic over the VCC range

of 4.5 to 5.5V.

The PLC18V8Z is a two-level logic element comprised of 10 inputs,

74 AND gates (product terms) and 8 output Macro cells.

Each output features an “Output Macro Cell” which can be

individually configured as a dedicated input, a combinatorial output,

or a registered output with internal feedback. As a result, the

PLC18V8Z is capable of emulating all common 20-pin PAL devices

to reduce documentation, inventory, and manufacturing costs.

A power-up reset function and a Register Preload function have

been incorporated in the PLC18V8Z architecture to facilitate state

machine design and testing.

With a standby current of less than 100µA and active power

consumption of 1.5mA/MHz, the PLC18V8Z is ideally suited for

power sensitive applications in battery operated/backed portable

instruments and computers.

The PLC18V8Z is also processed to industrial requirements for

operation over an extended temperature range of -40°C to +85°C

and supply voltage of 4.5V to 5.5V.

Ordering information can be found on the following page.

FEATURES

• 20-pin Universal Programmable Array Logic

• Virtually Zero-Standby-power

– 20µA (typical)

• Available in DIP, PLCC, SOL (Small Outline), SSOP (Shrink Small

Outline), and TSSOP (Thin Shrink Small Outline) packages

• Functional replacement for Series 20 PAL devices

– IOL = 24mA

• Up to 18 inputs and 8 input/output macro cells

• Programmable output polarity

• Power-up reset on all registers

• Register Preload capability

• Synchronous Preset/Asynchronous Reset

• Security fuse to prevent duplication of proprietary designs

• Also available in 3V operation–the P3C18V8Z

APPLICATIONS

• Battery powered instruments

• Laptop and pocket computers

• Industrial control

• Medical Instruments

• Portable communications equipment

PIN CONFIGURATIONS

D, DB, DH, N, Packages

I0/CLK 1

I1 2

I2 3

I3 4

I4 5

I5 6

I6 7

I7 8

I8 9

GND 10

20 VCC

19 F7

18 F6

17 F5

16 F4

15 F3

14 F2

13 F1

12 F0

11 I9/OE

D = Plasitc Small Outline Large Package (300mil-wide)

DB = Plastic Shrink Small Outline Package (5.3mm wide)

DH = Plastic Thin Shrink Small Outline Package (4.4mm wide)

N = Plastic Dual In-Line Package (DIP) (300mil-wide)

A Package

I0/

I2 I1 CLK VCC F7

3 2 1 20 19

I3 4

18 F6

I4 5

17 F5

I5 6

16 F4

I6 7

15 F3

I7 8

14 F2

9 10 11 12 13

I8 GND I9/ F0 F1

OE

A = Plastic Leaded Chip Carrier

PIN DESCRIPTIONS

I

Dedicated Input

B

Bidirectional input/output

O

Dedicated output

D

Registered output (D-type flip-flop)

F

Output/Input Macrocell

CLK

Clock Input

OE

Output Enable

VCC

GND

Supply Voltage

Ground

SP00544

PAL is a registered trademark of Advanced Micro Devices, Inc.

1997 Aug 08

2

853–2016 18258

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