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| Technology family | HC(T) |
| Bits (#) | 8 |
| Supply voltage (min) (V) | 2.8 |
| Supply voltage (max) (V) | 6.0 |
| IOL (max) (mA | 7.8 |
| IOH (max) (mA) | -7.8 |
| Supply current (max) (µA) | 80 |
| Input type | Standard CMOS;TTL |
| Output type | 3-State |
| Features | Balanced outputs, High speed (tpd 10-50ns), Output register, Positive input clamp diode |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 |
| EM74HC597D | HC597;XYYWW | SOP-16L | plastic small outline package; 16 leads;body width 3.9 mm |
| EM74HCT597D | HC597;XYYWW | SOP-16L | plastic small outline package; 16 leads;body width 3.9 mm |
| EM74HC597PW | HC597 ;XYYWW | TSSOP-16L | plastic thin shrink small outline package; 16 leads; body width 4.4 mm |
- ◼ Wide supply voltage range from 2.8 V to 6.0 V
- ◼ High noise immunity
- ◼ CMOS low power dissipation
- ◼ 8-bit parallel storage register inputs
- ◼ Shift register has direct overriding load and clear
- ◼ Latch-up performance exceeds 250 mA
- ◼ Complies with JEDEC standard:
- • JESD8C(2.8 V to 3.6 V)
- • JESD7A(2.8 V to 6.0 V)
- ◼ Input levels:
- • For EM74HC597: CMOS level
- • For EM74HCT597: TTL level
- ◼ ESD protection:
- • HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 3500 V
- • CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 2000 V
- ◼ Multiple package options
- ◼ Specified from -40 °C to +85 °C and from -40 °C to +125 °C
The EM74HC597; EM74HCT597 is an 8-bit shift register with input flip-flops. It consists of an 8 bit storage register feeding a parallel-in, serial-out 8-bit shift register. Both the storage register and the shift register have positive edge-triggered clocks. The shift register also has direct load (from storage) and clear inputs. Inputs include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.