HD75161A HITACHI
Document overview
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Technical content
Octal General Purpose Interface Bus Transceivers ADE-205-591 (Z) 1st. Edition Dec. 2000
Description
The HD75161A is an 8 channel general purpose interface bus transceiver designed to meet the requirements of IEEE standard 488-1978. The transceiver is to provide the bus management and data transfer signals during operating in a controller instrumentation system. When combined with the HD75160A octal bus transceiver, the HD75161A provides the complete 16 wire interface for the IEEE 488 bus. The HD75161A features eight driver receiver pairs connected in a front to back configureation to form input/output ports at both the bus and terminal sides. The direction of data through these driver receiver pairs is determined by the DC and TE enable signals. The device exhibits a high impedance to the bus when V CC = 0 V since the bus terminating resistors are built in. If featurs driver outputs which can handle loads up to 48 mA of sink current. Each receiver features p n p transistor inputs for high input impedance and guaranteed hysteresis of 400 mV for increased noise immunity.
(Top view) TE REN IFC NRFD DAV EOI NDAC 8ATN 9SRQ GND 10 GPIB I/O PORTS
20 VCC
DC Direction Control Control TE Talk Enable ATN Attention Bus Management SRQ Service Request REN Remote Enable IFC Interface Clear EOI End Or Identify DAV Data Valid NDAC Not Data Accepted Data Transfer NRFD Not Ready For Data
Bus management Channels Data transfer Channels Controls ATN*
1 SRQ REN IFC DAV NDAC NRFD
DC TE ATN Controlled By DC EOI Controlled by TE H HHRTRRTTRR HH L R L L HTRT TRRT T LL L T H L XRTRRRRT T L HXTRTTTTRR H : High level L : Low level X : Irrelevant R : Receiver T : Transmit Notes: 1. ATN is a normal transceiver channel that functions additionally as an internal direction control or talk enable for EOI whenever the DC and TE inputs are in the same state. 2. Direction of data transmittion is from the terminal side to the bus side and the direction of data receiving is from the bus side to the terminal side. Data transfer is noninverting in both directions. Absolute Maximum Ratings Item Symbol Rating Unit Supply Voltage V CC 7V Input Voltage V IC 5.5 V Output Current I OL 100 mA Power Dissipation (Ta = 25°C) P T 1150 mW Operating Temperature Range Topr 0 to 70 °C Storage Temperature Range Tstg –65 to +150 °C Note: 1. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
Recommended Operating Conditions Item Symbol Min Typ Max Unit Supply Voltage V CC 4.75 5.00 5.25 V Output Current Bus Ports With 3 State Outputs IOH — — –5.2 mA Terminal Ports — — –800 mA Output Current Bus Ports With 3 State Outputs IOL ——4 8 m A Terminal Ports — — 16 Operating Temperature Topr 0 — 70 °C
R D R D R D R D R D R D R D R D NRFD ATN EOI SRQ REN IFC DAV NDAC NRFD GPIB I/O PORTS TERMINAL I/O PORTS
Item Symbol V CC Min Max Unit Conditions Input Voltage V IH 2— — V VIL — — 0.8 Input Clamp Voltage V IK — — –1.5 V I I = –18 mA Hysteresis Bus V T + – VT – 0.4 — — V Output Voltage Terminal V OH 2.7 — — V I OH = –800 mA Bus 2.5 — — I OH = –5.2 mA Terminal V OL — — 0.5 V I OL = 16 mA Bus — — 0.5 I OL = 48 mA Input Current Terminal I I — — 100 mAV I = 5.5 V Terminal And IIH — — 20 V I = 2.7 V Control Inputs IIL — — –100 V I = 0.5 V Voltage at Bus Port V I/O (bus) 2.5 — 3.7 V Driver I I(bus) = 0 — — –1.5 Disabled I I(bus) = –12 mA Current Into Bus VCC ON I I/O (bus) –1.3 — — mA Driver V I(bus) = –1.5 V to 0.4 V Port 0 — –3.2 Disabled V I(bus) = 0.4 V to 2.5 V — — +2.5 –3.2 VI(bus) = 2.5 V to 3.7 V 0 — 2.5 V I(bus) = 3.7 V to 5 V 0.7 — 2.5 V I(bus) = 5 V to 5.5 V VCC OFF — — 40 mAV CC = 0, VI(bus) = 0 V to 2.5 V Short Circuit Terminal I OS –15 — –75 mA Output Current Bus –25 — –125 Supply Voltage I CC — — 100 mA No Load TE, DC, low Bus port Capacitance C I/O (bus) — 30 — pF V CC = 5 V or 0 V, VI/O = 0 to 2 V, f = 1 MHz Note: 1. V CC = 5 V, Ta = 25°C
Switching Characteristics (VCC = 5 V, Ta = 25°C) Item Symbol Input Output Min Typ Max Unit Test Circuit Test Conditions Propagation Delay tPLH Terminal BUS — 14 20 ns 1 C L = 30 pF Time t PHL —1 42 0 R L = 38.3 W to 2.3 V tPLH BUS Terminal — 12 20 2 C L = 30 pF tPHL —1 62 2 R L = 240 W to 5 V Output Enable Time tZH TE DC BUS — — 60 3 C L = 15 pF Output Disable Time tHZ ATTN, EO1 — — 45 R L = 480 W to 0 V Output Enable Time tZL REN, IFC — — 60 C L = 15 pF Output Disable Time tLZ and DAY — — 55 R L = 38.3 W to 2.3 V Output Enable Time tZH TE DC Terminal — — 55 4 C L = 15 pF Output Disable Time tHZ ——5 0 R L = 3 kW to 0 V Output Enable Time tZL ——4 5 C L = 15 pF Output Disable Time tLZ ——5 5 R L = 280 W to 5 V
Switching Time Test Method C = 30 pF L Test Point R = 38.3 L Ω 2.3 V Terminal Input 10 % 90 % tr tf 1.5 V 90 % 0 V 3 V 1.5 V 10 % Bus Output tPLH tPHL 2 V 0.8 V VOH VOL
C = 30 pF L Test Point R = 240 L Ω 5 V Bus Input 10 % 90 % tr tf 1.5 V 90 % 0 V 3 V 1.5 V 10 % Terminal Output tPLH tPHL 1.5 V 1.5 V VOH VOL
C = 15 pF L 2.3 V Test Point R = 38.3 L Ω R = 480 L Ω Control Input 10 % 90 % 1.5 V 90 % 0 V 3 V 10 % Bus Output S1 Closed S2 Open tZH tHZ 2 V VOH VOL tr tf 0.8 V tZL tLZ 2.3 V 0.8 V 90 % 10 % 1.5 V Bus Output S1 Open S2 Closed
C = 15 pF L 5 V R = 280 L Ω R = 3 k L Ω Control Input 10 % 90 % 1.5 V 90 % 0 V 3 V 10 % Terminal Output S1 Closed S2 Open tZH tHZ 1.5 V VOH VOL tr tf 1.5 V tZL tLZ 5 V 90 % 10 % 1.5 V Terminal Output S1 Open S2 Closed 0 VNotes: 1. The pulse generator has the following characteristics: PRR = 1 MHz, 50% duty cycle, tr £ 6 ns, tf £ 6 ns, Zout = 50 W 2. C L includes probe and jig capacitance. 3. All diodes are 1S2074(H).
Characteristics Of Driver And Receiver 0 –10 V = 5.25 VCC T = 25a ˚C –20 –30 –40 –50 5.00 V 4.75 V 0 –20 V = 5.25 VCC T = 25a ˚C –40 –60 –80 –100 5.00 V 4.75 V 0.5 0 10 V = 5.25 VCC T = 25a ˚C 0.4 0.3 0.2 0.1 20 30 40 50 V = 5.00 VCC V = 4.75 VCC 0.5 V = 5.25 VCC T = 25a ˚C 0.4 0.3 0.2 0.1 12 18 24 30 V = 5.00 VCC V = 4.75 VCC High Level Output Voltage VOH (V) High Level Output Current IOH (mA) (a) Driver Output (b) Driver Output Low Level Output Voltage VOL (V) Low Level Output Voltage V OL (V) Low Level Output Current IOL (mA) High Level Output Voltage VOH (V) High Level Output Current IOH (mA) (c) Receiver Output (d) Receiver Output Low Level Output Current IOL (mA)
V = 5 VCC 0.4 V +TV –T T = 25a ˚C 0.8 1.2 1.6 2.0 High Level Output Voltage VOUT (V) High Level Input Voltage VIN (V) (e) Input / Output Characteristics at Receiver
(reference value) DP-20N Conforms 1.26 g Unit: mm
0.51 Min
2.54 Min 5.08 Max 7.62 0.25 + 0.11 24.50
25.40 Max
0.89 1.30 6.30
7.00 Max1 10
0° – 15°
1.27 Max
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