HP 5384A Service Manual

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HP 5384A and HP 5385A
Service
8-63. Other symbols are used inside the outlines in 8-64. When nonstandardized information is shown
inside an outline, it is usually enclosed in square
brackets [like these].
this
data book in accordance with the I EC/IEEE stan-
dards but are not shown here. Generally these are
associated with arithmetic operations and are self-
explanatory.
·l-
--l.o-
~l-
~l-
~~
~r
V7~
---1 EN
J, K, R, S, T
--io
-j-m -+-m
-j+m -1-m
D:}
--1 CT = 15
CT = gf-
~]
"1"~
Table 8-4. Symbols Inside the Outline
Postponed output (of a pulse-triggered flip-flop). The output changes
when input initiating change (e.g., a C input) returns to its initial external
state or level.
Bi-threshold input (input with hysteresis).
NPN open-collector or similar output that can supply a relatively low-
impedance L level when not turned off. Requires external pull-up.
Capable of positive-logic wired-AND connection.
Passive-pull-up output is similar to NPN open-collector output but is
supplemented with a built-in passive pull-up.
NPN open-emitter or similar output that can supply a relatively low-
impedance H level when not turned off. Requires external pull-down.
Capable of positive-logic wired-OR connection.
Passive-pull-down output is similar to NPN open-emitter output but is
supplemented with a built-in passive pull-down.
Three-state output.
Enable input
When at its internal 1-state, all outputs are enabled.
When at its internal 0-state, open-collector and open-emitter outputs
are off, three-state outputs are at normally defined internal logic
states and at external high-impedance state, all other outputs
(e.g., totem-poles) are at the internal 0-state.
Usual meanings associated with flip-flop (e.g., R = reset, T =toggle).
-.-1 SR
Data input to a storage element equivalent to: ~
Shift right (left) inputs, m = 1, 2, 3, etc. If m = 1, it is usually not shown.
Counting l-IP (down) inputs, m = 1, 2, 3, etc. If m = 1, it is usually not shown.
Binary
grouping. m is highest power of 2.
The contents-setting input, when active, causes the content of a register to
take on the indicated value.
The content output is active if the content of the register is as indicated.
Input line grouping .... indicates two or more. terminals used to implement
a single logic input.
e.g., The paired expander inputs of SN7450. ~ :j] E
Fixed-state output always stands at its internal 1 state. For example, see
SN74185.
+
+
~
8-9

HP 5384A Specifications

General

Brand	HP
Model	5384A
Category	Cash Counter
Language	English