Specification
Min.
Max.
Unit
See Note
Characteristics
Decoder
4
-26.0
Signal Input Range
Decode Bandwidth
Probability 0.995
Probability 0.995
Probability 0.995
Not Decode Bandwidth
Probability 0.03
Probability 0.03
Probability 0.03
Noise Response Rate
%
%
%
‘C
‘E
6
6
6
±4.5
1.0
1.0
1.0
Digits
Digits
Digits
Noise Response Rate ‘E
Noise Response Rate ‘Z
Decode Response Time
to Tone
20
33
25
ms
ms
5
T
P
58
Tone to
Timing (Figure 3)
Address Set Up Time
Set Up lime
50
50
ns
ns
ns
ns
ns
ns
ns
ns
ms
A S
t
Address Hold Time
t
t
AH
Read/Write Recovery Time
Chip Select Access Time
Output Hold Time (Read)
Data Set Up Time (Write)
Data Hold Time (Write)
Power Up Reset Time
t
t
250
100
0
150
20
t
t
DHW
TS
3.0
ADDRESS
t
(READ)
VALID DATA
(WRITE)
3
Fig.3 CPU interface Timing Diagram
Notes 1.
No T
X Tone load.
2.
3.
4.
5.
6.
7.
Sink/Source currents $0.1
To 90% of nominal output, (from ‘F tone’ to ‘not-F tone’).
Sine or Square, a.c. coupled input.
With minimum tone period (Tp) for the tone set, S/N ratio
Under all conditions of input amplitude and S/N ratio, with maximum Tp specified for the tone set.
Gaussian Noise Input
band limited with a maximum input level corresponding to l-digit code
falsing rate. (random to random single characters).
6.
9.
With each data line loaded as: C = 50pf and
V
V
10.
11.
12.
External’connections on the Audio Output may alter these values.
Single digit response in a
period.
13. Single digit response in a 1 .O-hour period.
14.
An emiter follower output with an internal
resistor.
CMLMICRO [ CML MICROCIRCUITS ]
