參數(shù)資料
型號: PLS159AN
廠商: NXP SEMICONDUCTORS
元件分類: PLD
英文描述: Programmable logic sequencer 16 】 45 】 12
中文描述: OT PLD, 35 ns, PDIP20
封裝: 0.300 INCH, PLASTIC, DIP-20
文件頁數(shù): 1/12頁
文件大小: 132K
代理商: PLS159AN
Philips Semiconductors Programmable Logic Devices
Product specification
PLS159A
Programmable logic sequencer
(16
×
45
×
12)
25
October 22, 1993
853–1159 11164
DESCRIPTION
The PLS159A is a 3-State output, registered
logic element combining AND/OR gate arrays
with clocked J-K flip-flops. These J-K
flip-flops are dynamically convertible to
D-type via a “fold-back” inverting buffer and
control gate F
C
. It features 8 registered I/O
outputs (F) in conjunction with 4 bidirectional
I/O lines (B). These yield variable I/O gate
and register configurations via control gates
(D, L) ranging from 16 inputs to 12 outputs.
The AND/OR arrays consist of 32 logic AND
gates, 13 control AND gates, and 21 OR
gates with fusible link connections for
programming I/O polarity and direction. All
AND gates are linked to 4 inputs (I),
bidirectional I/O lines (B), internal flip-flop
outputs (Q), and Complement Array output
(C). The Complement Array consists of a
NOR gate optionally linked to all AND gates
for generating and propagating
complementary AND terms.
On-chip T/C buffers couple either True (I, B,
Q) or Complement (I, B, Q, C) input polarities
to all AND gates, whose outputs can be
optionally linked to all OR gates. Any of the
32 AND gates can drive bidirectional I/O lines
(B), whose output polarity is individually
programmable through a set of Ex-OR gates
for implementing AND-OR or AND-NOR logic
functions. Similarly, any of the 32 AND gates
can drive the J-K inputs of all flip-flops. There
are 4 AND gates for the Asynchronous
Preset/Reset functions.
All flip-flops are positive edge-triggered and
can be used as input, output or I/O (for
interfacing with a bidirectional data bus) in
conjunction with load control gates (L),
steering inputs (I), (B), (Q) and
programmable output select lines (E).
The PLS159A is field-programmable,
enabling the user to quickly generate custom
patterns using standard programming
equipment.
FEATURES
High-speed version of PLS159
f
MAX
= 18MHz
25MHz clock rate
Field-Programmable (Ni-Cr link)
4 dedicated inputs
13 control gates
32 AND gates
21 OR gates
45 product terms:
32 logic terms
13 control terms
4 bidirectional I/O lines
8 bidirectional registers
J-K, T, or D-type flip-flops
Power-on reset feature on all flip-flops
(F
n
= 1)
Asynchronous Preset/Reset
Complement Array
Active-High or -Low outputs
Programmable OE control
Positive edge-triggered clock
Input loading: –100
μ
A (max.)
Power dissipation: 750mW (typ.)
TTL compatible
3-State outputs
APPLICATIONS
Random sequential logic
Synchronous up/down counters
Shift registers
Bidirectional data buffers
Timing function generators
System controllers/synchronizers
Priority encoder/registers
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
N Package
CLK
I0
I1
I2
I3
B0
B1
B2
B3
F0
GND
F1
F2
F3
F4
F5
F6
F7
V
CC
OE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
A Package
F0
F1
F2
F3
F4
F5
F6
F7
V
CC
OE
CLK
I0
I1
I2
I3
B0
B1
B2
B3 GND
N = Plastic Dual In-Line Package (300mil-wide)
A = Plastic Leaded Chip Carrier
ORDERING INFORMATION
DESCRIPTION
ORDER CODE
DRAWING NUMBER
20-Pin Plastic Dual In-Line Package (300mil-wide)
PLS159AN
0408D
20-Pin Plastic Leaded Chip Carrier
PLS159AA
0400E
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