TIB82S105BC Datasheet, PDF (1/14 Pages) Texas Instruments – 16 × 48 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER WITH 3-STATE OUTPUTS OR PRESET

TIB82S105BC
16 × 48 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER
WITH 3-STATE OUTPUTS OR PRESET
SRPS025A – D2897, SEPTEMBER 1985 – REVISED NOVEMBER 1995
• 50-MHz Clock Rate
• Power-On Preset of All Flip-Flops
• 6-Bit Internal State Register With 8-Bit
Output Register
• Power Dissipation . . . 600 mW Typical
• Programmable Asynchronous Preset or
Output Control
• Functionally Equivalent to, but Faster Than
82S105A^†
description
The TIB82S105BC is a TTL field-programmable
state machine of the Mealy type. This state
machine (logic sequencer) contains 48 product
terms (AND terms) and 14 pairs of sum terms (OR
terms). The product and sum terms are used to
control the 6-bit internal state register and the 8-bit
output register.
N PACKAGE
(TOP VIEW)
CLK ₁
I7 ₂
I6 ₃
I5 ₄
I4 ₅
I3 ₆
I2 7
I1 8
I0 9
Q7 10
Q6 11
Q5 12
Q4 13
GND 14
28 ^V_CC
27 ^I8
26 ^I9
25 ^I10
24 ^I11
23 ^I12
22 I13
21 I14
20 I15
19 PRE/OE
18 Q0
17 Q1
16 Q2
15 Q3
FN PACKAGE
(TOP VIEW)
The outputs of the internal state register (P0 – P5)
are fed back and combined with the 16 inputs
(I0 – I15) to form the AND array. In addition a single
sum term is complemented and fed back to the
AND array, which allows any of the product terms
to be summed, complemented, and used as an
input to the AND array.
The state and output registers are positive-edge-
triggered S/R flip-flops. These registers are
unconditionally preset high during power up.
Pin19 can be used to preset both registers or, by
blowing the proper fuse, be converted to an output
control function.
4 3 2 1 28 27 26
I4 ⁵
25 I10
I3 ⁶
24 I11
I2 ⁷
23 I12
I1 ⁸
22 I13
I0 ⁹
21 I14
Q7 ¹⁰
20 I15
Q6 ¹¹
19 PRE/OE
12 13 14 15 16 17 18
The TIB82S105BC is characterized for operation
from 0°C to 75°C.
† Power-up preset and asynchronous preset functions are not identical to 82S105A. See Recommended Operating Conditions.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1995, Texas Instruments Incorporated
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