MC74F3893A quad backplane transceiver intended used very high speed sy

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MC74F3893A quad backplane transceiver intended used very high speed sy

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MC74F3893A QUAD FUTUREBUS BACKPLANE TRANSCEIVER STATE OPEN COLLECTOR)
MC74F3893A quad backplane transceiver intended used very high speed systems. MC74F3893A interfaces "Backplane Transceiver Logic" (BTL). features reduced voltage swing lower power consumption series diode drivers reduce capacitive loading pF). Incident wave switching employed, therefore propagation delays short. Although voltage swing much less BTL, receiver threshold region, therefore noise margins excellent. offers power consumption, ground bounce, reduced crosstalk, capacitive loading, superior noise margin short propagation delays. This results high bandwidth, reliable backplane. MC74F3893A four outputs (Rn) receiver side with common Receive Enable input (RE). four data inputs (Dn) which also TTL. These data inputs NANDed with Data Enable input (DE). four pins (Bus side) futurebus compatible, sink minimum designed drive heavily loaded backplanes with load impedances ohms. outputs designed glitch-free during power power down. Quad Backplane Transceiver Drives Heavily Loaded Backplanes with Equivalent Load Impedances Down ohms Futurebus Drivers Sink Reduced Voltage Swing Volt) Produces Less Noise Reduces Power Consumption High Speed Operation Enhances Performance Backplane Buses Facilitates Incident Wave Switching Compatible with IEEE IEEE 1194.1 Futurebus Standards Built-In Precision Band-Gap (BG) Reference Provides Accurate Receiver Threshold Improved Noise Immunity Glitch-Free Power Up/Power Down Operation Outputs Function Compatible with DS3893A Signetics 74F3893 Separate Ground Returns Each Driver Minimize Ground Noise Compatible High Impedance Inputs PINOUT: 20-LEAD PLCC (TOP VIEW)
I/O0 I/O1 I/O2 I/O3
QUAD FUTUREBUS BACKPLANE TRANSCEIVER STATE OPEN COLLECTOR)
FASTSCHOTTKY
SUFFIX PLASTIC CASE 775-02
ORDERING INFORMATION
MC74FXXXXAFN Plastic
LOGIC SYMBOL
I/O0 I/O1 I/O2 I/O3
LOGIC
FAST DATA 4-273
MC74F3893A
LOGIC DIAGRAM
I/O0
I/O1
I/O2
I/O3
LOGIC 13,16,
FUNCTION TABLE
Inputs Input/Output I/On Outputs Operating Mode Transmit Receiver 3-State, Transmit Receive, I/On Inputs
HIGH voltage level: voltage level: Don't care: HIGH impedance "Off" state.
RECOMMENDED OPERATING CONDITIONS
Limits Symbol Supply Voltage High-Level Input Voltage Low-Level Input Voltage Input Clamp Current Input Threshold Output Current High Output Current Operating Ambient Temperature Range I/On Only Only Parameter 1.475 1.550 1.625 -3.0 Unit
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MC74F3893A
CHARACTERISTICS (Over Recommended Operating Free-Air Temperature Range Unless otherwise specified)
Limits Symbol Parameter High-Level Output Voltage Unit Test Conditions (Note MIN: MAX: MIN: VIH: VIH: -250 -0.73 -1.2 -100 -200 -500 -200 MAX: 0.5V: MIN, MAX: MAX: I/On I/On I/On
VOHB
High-Level Output Voltage
I/On
VOLB
Output Voltage
I/On
0.75
0.35
Level Output Voltage
0.75
VOCB IIHB
Driver Output Positive Clamp Voltage Input Clamp Diode Voltage
I/On
Input Current Maximum Input Voltage High Level Input Current High-Level Current (Power Off) I/On
Low-Level Input Current
IILB IOZH IOZL
Low-Level Current (Power Off-State Output Current, HighLevel Voltage Applied Off-State Output Current, Low-Level Voltage Applied Output Short Circuit Current (Note Supply Current (Total
I/On
MAX: I/On 0.75 2.5V: MAX: MAX: VIL) MAX:
NOTES: conditions shown MAX, appropriate value specified under recommended operating conditions applicable device type. typical values 25°C. more than output should shorted time. testing IOS, high-speed test apparatus and/or sample-and-hold techniques preferable order minimize internal heating more accurately reflect operational values. Otherwise, prolonged shorting High output raise chip temperature well above normal thereby cause invalid readings other parameter tests. sequence parameter tests, tests should performed last.
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MC74F3893A
ELECTRICAL CHARACTERISTICS Receiver Receiver Enable
+25°C VCC=+5.0V, VT=+2.0V Symbol tPLH tPHL tPLH tPHL tTLH tTHL tDskew Parameter Propagation Delay I/On Propagation Delay I/On I/On Transition Time 90%, Skew Between Receivers Same Package +70°C VCC=+5.0V ±10%,VT=+2.0V Unit
ELECTRICAL CHARACTERISTICS Receiver
+25°C VCC=+5.0V 1.0K Symbol tPLH tPHL tDskew Parameter Propagation Delay I/On Skew Between Receivers Same Package +70°C VCC=+5.0V ±10% 1.0K Unit
ELECTRICAL CHARACTERISTICS Receiver Enable
+25°C VCC=+5.0V Symbol tPZH tPZL tPHZ tPLZ Parameter Output Enable High Level Output Disable From High Level +70°C VCC=+5.0V ±10% 12.0 12.0 Unit
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FAST DATA 4-277

MC74F3893A quad backplane transceiver intended used very high speed sy

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