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CD74HC243E Datasheet(PDF) 1 Page - Texas Instruments |
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CD74HC243E Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page 1 Data sheet acquired from Harris Semiconductor SCHS168 CD74HCT242 was not acquired from Harris Semiconductor. Features • Typical Propagation Delay (A to B, B to A) of 7ns at VCC = 5V, CL = 15pF, TA = 25 oC • Three-State Outputs • Buffered Inputs • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Pinout CD74HCT242, CD74HC243, CD74HCT243 (PDIP, SOIC) TOP VIEW Description The Harris CD74HCT242, CD74HC243 and CD74HCT243 silicon-gate CMOS three-state bidirectional inverting and non-inverting buffers are intended for two-way asynchronous communication between data buses. They have high drive current outputs which enable high-speed operation when driving large bus capacitances. These circuits possess the low power dissipation of CMOS circuits, and have speeds comparable to low power Schottky TTL circuits. They can drive 15 LSTTL loads. The CD74HCT242 is an inverting buffer; the CD74HC243 and CD74HCT243 are non-inverting buffers. The states of the output enables (OEB, OEA) determine both the direction of flow (A to B, B to A), and the three-state mode. OEB NC A0 A1 A2 A3 GND VCC OEA NC B0 B1 B2 B3 1 2 3 4 5 6 7 14 13 12 11 10 9 8 Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. CD74HC243E -55 to 125 14 Ld PDIP E14.3 CD74HC243M -55 to 125 14 Ld SOIC M14.15 CD74HCT243M -55 to 125 14 Ld SOIC M14.15 NOTES: 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Wafer or die for this part number is available which meets all elec- trical specifications. Please contact your local sales November 1997 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1997 CD74HCT242, CD74HC243, CD74HCT243 High Speed CMOS Logic Quad-Bus Transceiver with Three-State Outputs File Number 1488.1 [ /Title (CD74 HCT24 2, CD74 HC243 , CD74 HCT24 3) /Sub- ject (High Speed CMOS Logic Quad- |
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