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HD74HC623 Dataheets PDF



Part Number HD74HC623
Manufacturers Hitachi Semiconductor
Logo Hitachi Semiconductor
Description Octal Bus Transceivers
Datasheet HD74HC623 DatasheetHD74HC623 Datasheet (PDF)

HD74HC620/HD74HC623 Octal Bus Transceivers (with inverted 3-state outputs) Octal Bus Transceivers (with 3-state outputs) Description This octal bus transceiver is designed for asynchronous two-way communication between data buses. The control fuction implementation allows for maximum flexibility in timing. This device allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic levels at the enable inputs (GBA and GAB). The enable inputs can be us.

  HD74HC623   HD74HC623


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HD74HC620/HD74HC623 Octal Bus Transceivers (with inverted 3-state outputs) Octal Bus Transceivers (with 3-state outputs) Description This octal bus transceiver is designed for asynchronous two-way communication between data buses. The control fuction implementation allows for maximum flexibility in timing. This device allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic levels at the enable inputs (GBA and GAB). The enable inputs can be used to disable the device so that the buses are effectively isolated. The dual-enable configuration gives these devices the capability to store data by simultaneous enabling of GBA and GAB. Each output reinforces its input in this transceiver configuration. Thus, when both control inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, both sets of bus lines (16 in all) will remain at their last states. The 8-bit codes appearing on the two sets of buses will be identical for the HD74HC623 or coplementary for the HD74HC620. Features • • • • • High Speed Operation: tpd (Bus to Bus) = 12 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Enable Inputs GBA L H H L GAB L H L H Operation HD74HC620 B data to A bus A data to B bus Isolation B data to A bus, A data to B bus HD74HC623 B data to A bus A data to B bus Isolation B data to A bus, A data to B bus HD74HC620/HD74HC623 Pin Arrangement Enable GAB 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GND 10 (Top view) 20 VCC 19 Enable GBA 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 Absolute Maximum Ratings Item Supply voltage range Input voltage Output voltage Output current DC current drain per VCC GND DC input diode current DC output diode current Power Dissipation per package Storage temperature Symbol VCC VIN VOUT I OUT I CC, I GND I IK I OK PT Tstg Rating –0.5 to +7.0 –0.5 to VCC + 0.5 –0.5 to VCC + 0.5 ±35 ±75 ±20 ±20 500 –65 to +150 Unit V V V mA mA mA mA mW °C 2 HD74HC620/HD74HC623 Block Diagram HD74HC620 GBA GAB VCC A1 VCC B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 A8 B8 3 HD74HC620/HD74HC623 HD74HC623 GBA GAB VCC A1 VCC B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 A8 B8 4 HD74HC620/HD74HC623 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.5 1.35 1.8 — — — — — 0.1 0.1 0.1 0.33 0.33 ±5.0 ±1.0 40 µA µA µA I OL = 6 mA I OL = 7.8 mA Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –6 mA I OH = –7.8 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 1.5 — 3.15 — 4.2 — — — — — — — — — — 0.5 1.5 3.15 4.2 — VIL 2.0 4.5 6.0 1.35 — 1.8 — 1.9 4.4 5.9 4.13 5.63 — — — Output voltage VOH 2.0 4.5 6.0 4.5 6.0 1.9 2.0 — 4.4 4.5 — 5.9 6.0 — 4.18 — 5.68 — — — — — — — — — — — VOL 2.0 4.5 6.0 4.5 6.0 0.0 0.1 0.0 0.1 0.0 0.1 — — — — — 0.26 — 0.26 — ±0.5 — ±0.1 — 4.0 — Off-state output current Input current Quiescent supply current I OZ Iin I CC 6.0 6.0 6.0 5 HD74HC620/HD74HC623 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = 25°C Item Symbol Ta = –40 to +85°C Max 125 25 21 190 38 33 190 38 33 75 15 13 10 pF ns ns ns Unit ns Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 — — — — — — — — — — — — — — 12 — — 12 — — 16 — — 4 — 5 100 — 20 17 — — Propagation delay t PLH time t PHL Output enable time t ZH t ZL 2.0 4.5 6.0 150 — 30 26 — — Output disable time t HZ t LZ 2.0 4.5 6.0 150 — 30 26 60 12 10 10 — — — — — — Output rise/fall time t TLH t THL 2.0 4.5 6.0 Input capacitance Cin — 6 Unit: mm 24.50 25.40 Max 20 11 7.00 Max 6.30 1 0.89 1.27 Max 10 1.30 2.54 Min 5.08 Max 7.62 0.51 Min 2.54 ± 0.25 0.48 ± 0.10 0.25 – 0.05 0° – 15° + 0.11 Hitachi Code JEDEC EIAJ Weight (reference value) DP-20N — Conforms 1.26 g Unit: mm 12.6 13 Max 20 11 1 10 5.5 0.80 Max 2.20 Max *0.22 ± 0.05 0.20 ± 0.04 0.20 7.80 + – 0.30 1.15 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DA — Conforms 0.31 g Unit: mm 12.8 13.2 Max 20 11 7.50 1 0.935 Max 10 2.65 Max *0.27 ± 0.05 0.25 ± 0.04 0.25 10.40 + – 0.40 1.45 0° – 8° 0.57 0.70 + – 0.30 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.12 M *Dimension including the plating thickness Base material dimension 0.20 ± 0.10 0.15 Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DB Conforms — 0.52 g Cautions 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with .


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