667

Figure 10. O-BLL and I-H50 Simplified Circuit Schematics. (Note: I-H50 Inputs Should Never Be Connected to Ground as

Permanent Damage to the Device May Result.)

VCC_LOG

ESD

GND_LOG

GND_HS

VCC_HS

80

80

O-BLL

I-H50

ESD

ESD

ESD

VCC_LOG

ESD

GND_LOG

GND_HS

VCC_HS

ESD

ESD

ESD

50

50

VCC_HS

0.1 µF

0.1 µF

Zo = 50

Ω

Zo = 50

Ω

Figure 9. O-TTL and I-TTL Simplified Circuit Schematic.

VCC_TTL

10 K

VBB 1.4 V

10 K

VCC_LOG

ESD

ESD

GND_TTL

GND_LOG

VCC_LOG

ESD

ESD

GND_LOG

GND_TTL

VCC_TTL

6 K

36

72

800

O_TTL

I_TTL