SN74F657DWR
ObsoleteBUS XCVR SINGLE 8-CH 3-ST 24-PIN SOIC T/R
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SN74F657DWR
ObsoleteBUS XCVR SINGLE 8-CH 3-ST 24-PIN SOIC T/R
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Technical Specifications
Parameters and characteristics for this part
| Specification | SN74F657DWR |
|---|---|
| Current - Output High, Low [x] | 12 mA, 3 mA |
| Current - Output High, Low [y] | 24 mA, 64 mA |
| Mounting Type | Surface Mount |
| Number of Bits per Element | 8 |
| Number of Elements | 1 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Output Type | 3-State |
| Package / Case | 24-SOIC |
| Package / Case [custom] | 7.5 mm |
| Package / Case [custom] | 0.295 in |
| Supplier Device Package | 24-SOIC |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 4.5 V |
SN74F657 Series
Octal Transceiver With Parity Generator/Checker and 3-State Outputs
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Current - Output High, Low [y] | Current - Output High, Low [x] | Package / Case | Package / Case | Package / Case | Number of Elements | Mounting Type | Number of Bits per Element | Output Type | Voltage - Supply [Min] | Voltage - Supply [Max] | Supplier Device Package | Package / Case [custom] | Package / Case [custom] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | 70 °C | 0 °C | 24 mA 64 mA | 3 mA 12 mA | 0.3 in | 24-DIP | 7.62 mm | 1 | Through Hole | 8 | 3-State | 4.5 V | 5.5 V | 24-PDIP | ||
Texas Instruments | 70 °C | 0 °C | 24 mA 64 mA | 3 mA 12 mA | 24-SOIC | 1 | Surface Mount | 8 | 3-State | 4.5 V | 5.5 V | 24-SOIC | 7.5 mm | 0.295 in | ||
Texas Instruments | 70 °C | 0 °C | 24 mA 64 mA | 3 mA 12 mA | 24-SOIC | 1 | Surface Mount | 8 | 3-State | 4.5 V | 5.5 V | 24-SOIC | 7.5 mm | 0.295 in | ||
Texas Instruments | 70 °C | 0 °C | 24 mA 64 mA | 3 mA 12 mA | 24-SOIC | 1 | Surface Mount | 8 | 3-State | 4.5 V | 5.5 V | 24-SOIC | 7.5 mm | 0.295 in |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
Description
General part information
SN74F657 Series
The SN74F657 contains eight noninverting buffers with 3-state outputs and an 8-bit parity generator/checker. It is intended for bus-oriented applications. The buffers have a specified current sinking capability of 24 mA at the A port and 64 mA at the B port.
The transmit/receive (T/R\) input determines the direction of the data flow through the bidirectional transceivers. When T/R\ is high, data is transmitted from the A port to the B port. When T/R\ is low, data is received at the A port from the B port.
When the output enable () input is high, both the A and B ports are placed in a high-impedance state (disabled). The ODD/EVEN\ input allows the user to select between odd or even parity systems. When transmitting from A port to B port (T/R\ high), PARITY is an output from the generator/checker. When receiving from B port to A port (T/R\ low), PARITY is an input.
Documents
Technical documentation and resources