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4
4-163
Models 898, 899
N
1
N/2
-3 Circuit - Isolated Resistors
-1 Circuit - Bussed Resistors
N
1
N/2
-5 Circuit - Dual Terminator
N
R1
R2
1
N/2
-42 Circuit - 5.2V (VEE) Pull-Down
VCC
VCC
VEE
1
16
cR
R
R
R
R
R
R
R
R
R
RR
VEE
-45 Circuit - TTL to ECL Translator
VCC
VCC
R1
180
Ω
270
Ω
820
Ω
R2
R3
1
16
TTL Inputs
Outputs To ECL
Custom Model: 898-45
R1=180Ω R2=270Ω R3=820Ω
Custom Model: 898-42-R (R)
R=510
Ω
VEE
SCHEMATICS
Max.
Notes:
Unless otherwise specified,
tolerances are
Ref.
.050
1.27
Max.
.125
3.18
Ref.
.060
1.52
Max.
.185
4.70
Min.
.020
0.51
Max.
.880
22.4
Model 898
Model 899
Max.
.780
19.8
±
.005
0.13
Ref.
.250
6.35
.135
± .030
3.43
± 0.76
Typical spacing
non-accumulating
lead thickness:
*
.010
± .002
0.25
± 0.05
.340
± .020
8.64
± 0.51
.600
± .010
15.2
± 0.25
.018
± .003
0.46
± 0.08
.100
± .010*
2.54
± 0.25
.080
± .020
2.03
± 0.51
.700
± .010
17.8
± 0.25
OUTLINE DIMENSIONS (Inch/mm)
Note: Model 899: N = 114 Leads, Model 898: N = 16 Leads.
Custom circuits are available. Consult Factory.
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