Icom IC-751A Service Manual page 102

Frequency-division ratio switching input and
PIN CONNECTIONS Frequency division ratio - 1/20 1/100
M54466L (1/10, 1/11 HIGH SPEED DIVIDER
WITH ECL OUTPUT)
PIN CONNECTIONS
123 4 5
PIN CONNECTIONS (Top View)
von 1 [_| XL?) [| 40 BR
f Ro 2 Co _ 39 Ro } Input/output port R
Input/output port R
Re 3 [_| | 38 Vss (OV)
Chip enable input ce 4 [_] | 37 Se
Mode select input MS 5 r | 36 Si } Port select input
Strobe data input STD 6 & r | 35 So
Pt 7 [_] T) 34 P3s
input/output port 1 | pu 8 ES T 33° P8e } Input/output port 3
Ple 9 P| 32 Pa:
Pis to [_| P| 31 Pa
P4o 14 Cy [| 30 Ps
Input/output port 4 | ee t = = ee m } Input/output port 7
Pas 14 [_| | 27 Pr
P50 15 [_| T] 26 Pés
Input/output port 5 j . = = . re } Input/output port 6
a T} 23 Peo
Input/output port 2 { Peo 19 C4 L_ 22 Pes \ Input/ 2
p21 20 [_| P) o21 Pa put/output port