The HEF4738V is an implementation of the IEC-bus as described in IEC report 66 CO 22 (interface system for programmable measuring apparatus) as well as in IEEE standard 488-1975 (standard digital interface for programmable instrumentation). Together with bus-drivers, level converters and multiplexers it is suitable for connecting electronic programmable and .
• Complete acceptor handshake (subset AH1)
• Basic talker with serial poll and talk-only mode (when It = LOW, subset T1; It = HIGH, subset T5)
• Basic listener with listen-only mode (when It = LOW, subset L1; It = HIGH, subset L3)
• Complete service request (subset SR1)
• Complete remote local (subset RL1)
• Remote parallel poll configuration (subset PP1)
• Complete device clear (subset DC1)
• Complete device trigger (subset DT1)
• Some controller facilities
Fig.1 Basic IEC/IEEE bus interface using the HEF4738V.
SUPPLY VOLTAGE RATING −0,5 to 18 RECOMMENDED OPERATING 4,5 to 12,5 V
FAMILY DAT.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | HEF4731B |
NXP |
Quadruple 64-bit static shift register | |
2 | HEF4731V |
NXP |
Quadruple 64-bit static shift register | |
3 | HEF4737B |
NXP |
Quadruple static decade counters | |
4 | HEF4737V |
NXP |
Quadruple static decade counters | |
5 | HEF4720B |
NXP |
256-bit/ 1-bit per word random access memories | |
6 | HEF4720V |
NXP |
256-bit/ 1-bit per word random access memories | |
7 | HEF4724B |
NXP |
8-bit addressable latch | |
8 | HEF4750V |
NXP |
Frequency synthesizer | |
9 | HEF4751V |
NXP |
Universal divider | |
10 | HEF4752V |
NXP |
A.C. motor control circuit | |
11 | HEF4753B |
NXP |
Universal timer module | |
12 | HEF4754V |
NXP |
18-element bar graph LCD driver |